FOOTNOTES:

[1] See Buxtorf, s.v. _Abh_, and cf. the title of the tract _Pirke

Aboth_ (ed. Taylor, p. 3).

[2] _Polyc. Mart_. 8.

[3] _Studia biblica_, iv. p. 273.

[4] In his book _De viris illustribus_.

[5] The term _patres apostolici_ is due to the patristic scholars of

the 17th century: see Lightfoot, _St Clement of Rome_, i. p. 3.

"Sub-apostolic" is perhaps a more accurate designation.

[6] The _editio princeps_ of Niceta's works was published by Dr A.E.

Burn in 1905.

[7] The Greek patrology contains, however, besides the text, a Latin

translation, and in both patrologies there is much editorial matter.

[8] Sess. iv.

[9] E.G. Mohler, _Symbolism_ (E. tr.) S 42.

[10] See J.J. Blunt, _Right Use of the Fathers_, p. 15 ff.

[11] See Stanton, _Place of Authority in Religion_, p. 165 f.

[12] _Corpus scriptorum ecclesiasticorum Latinorum_.

[13] _Griechischen christlichen Schriftstellern der ersten drei

Jahrhunderte_.

FATHOM (a word common, in various forms, to Scandinavian and Teutonic

languages; cf. Danish _favn_, Dutch _vaam_ and Ger. _Faden_, and meaning

"the arms extended"; the ultimate origin is a root _pet_, seen in the

Gr. [Greek: petannunai], to spread), a measure of length, being the

distance from the tip of one middle finger to the tip of the other, when

the arms are stretched out to their widest extent. This length has been

standardized to a measure of 6 ft., and as such is used mainly in

soundings as a unit for measuring the depth of the sea. "Fathom" is also

used in the measurement of timber, when it is equivalent to 6 ft. sq.;

similarly, in mining, a fathom is a portion of ground running the whole

thickness of the vein of ore, and is 6 ft. in breadth and thickness. The

verb "to fathom," i.e. to sound or measure with a fathom-line, is used

figuratively, meaning to go into a subject deeply, to penetrate, or to

explore thoroughly.

FATIMITES, or FATIMIDES, the name of a dynasty called after Fatima,

daughter of the prophet Mahomet, from whom and her husband the caliph

Ali, son of Abu Talib, they claimed descent. The dynasty is also called

'Obaidi (Ubaidi) after 'Obaidallah, the first sovereign, and 'Alawi, a

title which it shares with other dynasties claiming the same ancestry.

For a list of sovereigns see EGYPT, section _History_ (Mahommedan

period); three, however, must be prefixed who reigned in north-western

Africa before the annexation of Egypt: al-Mahdi 'Obaidallah 297 (909);

al-Qa'im Mahommed 322 (934); al-Mansur Isma'il 334 (945).

The dynasty owed its rise to the attachment to the family of the prophet

which was widespread in the Moslem world, and the belief that the

sovereignty was the right of one of its members. Owing, however, to the

absence of the principle of primogeniture there was difference of

opinion as to the person whose claim should be enforced, and a number of

sects arose maintaining the rights of different branches of the family.

The Fatimites were supported by those who regarded the sovereignty as

vested in Isma'il, son of Ja'far al-Sadiq, great-great-grandson of Ali,

through his second son Hosain (Husain). Of this Isma'il the first

Fatimite caliph was supposed to be the great-grandson. The line of

ancestors between him and Isma'il is, however, variously given, even his

father's name being quite uncertain, and in some of the pedigrees even

Isma'il does not figure. Apparently when the family first became of

political importance their Alid descent was not disputed at Bagdad, and

the poet al-Sharif al-Radi (d. A.H. 406: A.D. 1015), in whose family the

office of Naqib (registrar of the Alids) was hereditary, appears to have

acknowledged it (_Diwan_, ed. Beirut, p. 972). When their success became

a menace to the caliphs of Bagdad, genealogists were employed to

demonstrate the falsity of the claim, and a considerable literature,

both official and unofficial, rose in consequence. The founder of the

dynasty was made out to be a scion of a family of heretics from whom the

terrible Carmathian sect had originated: later on (perhaps owing to the

role played by Jacob, son of Killis, in bringing the Fatimites to

Egypt), the founder was made out to have been a Jew, either as having

been adopted by the heretic supposed to be his father, or as having been

made to personate the real 'Obaidallah, who had been killed in

captivity. While the stories that make him of either Jewish or

Carmathian origin may be neglected, as the product of malice, the

uncertainty of the genealogies offered by their partisans renders any

positive solution of the problem impossible. What seems to be clear is

that secretly within the Abbasid empire propaganda was carried on in

favour of one or other Alid aspirant, and the danger which any such

aspirant incurred by coming forward openly led to his whereabouts being

concealed except from a very few adherents. What is known then is that

towards the end of the 3rd Islamic century the leader of the sect of

Isma'i-lites (Assassins, q.v.) who afterwards mounted a throne, lived at

Salamia, near Emesa (Homs), having agents spread over Arabia, Persia and

Syria, and frequently receiving visits from pious adherents, who had

been on pilgrimage to the grave of Hosain (Husain). Such visitors

received directions and orders such as are usual in secret societies.

One of these agents, Abu Abdallah al-Hosain called al-Shi'i, said to

have filled the office of censor (_muhtasib_) at Basra, received orders

to carry on a mission in Arabia, and at Mecca is said to have made the

acquaintance of some members of the Berber tribe Kutama, south of the

bay of Bougie. These persons persuaded him to travel home with them in

the character of teacher of the Koran, but according to some authorities

the ground had already been prepared there for a political mission. He

arrived in the Kutama country in June 893, and appears very soon to have

been made chief, thereby exciting the suspicion of the Aghlabite ruler

of Kairawan, Ibrahim b. Ahmad, which, however, was soon allayed. His

success provoked a civil war among the Berbers, but he was protected by

a chief named Hasan b. Harun, and displayed sufficient military ability

to win respect. Nine years after his arrival he made use of the unrest

following on the death of the Aghlabite Ibrahim to attack the town of

Mila, which he took by treachery, and turned into his capital; the son

and successor of Ibrahim, Abu'l-'Abbas 'Abdallah, sent his son al-Ahwal

to deal with the new power, and he defeated al-Shi'i in some battles,

but in 903 al-Ahwal was recalled by his brother Ziyadatallah, who had

usurped the throne, and put to death.

At some time after his first successes al-Shi'i sent a messenger

(apparently his brother) to the head of his sect at Salamia, bidding him

come to the Kutama country, and place himself at the head of affairs,

since al-Shi'i's followers had been taught to pay homage to a Mahdi who

would at some time be shown them. It is said that 'Obaidallah, who now

held this post, was known to the court at Bagdad, and that on the news

of his departure orders were sent to the governor of Egypt to arrest

him; but by skilful simulation 'Obaidallah succeeded in escaping this

danger, and with his escort reached Tripoli safely. Instructions had by

this time reached the Aghlabite Ziyadatallah to be on the watch for the

Mahdi, who was finally arrested at Sijilmasa (Tafilalt) in the year A.H.

292 (A.D. 905); his companion, al-Shi'i's brother, had been arrested at

an earlier point, and the Mahdi's journey to the south-west must have

been to elude pursuit.

The invitation to the Mahdi turned out to have been premature; for

Ziyadatallah had sent a powerful army to oppose al-Shi'i, which, making

Constantine its headquarters, had driven al-Shi'i into the mountains:

after six months al-Shi'i secured an opportunity for attacking it, and

won a complete victory. Early in 906 another army was sent to deal with

al-Shi'i, and an earnest appeal came from the caliph Muqtafi (Moktafi),

addressed to all the Moslems of Africa, to aid Ziyadatallah against the

usurper. The operations of the Aghlabite prince were unproductive of any

decided result, and by September 906 al-Shi'i had got possession of the

important fortress Tubna and some others. Further forces were

immediately sent to the front by Ziyadatallah, but these were defeated

by al-Shi'i and his officers, to whom other towns capitulated, till

Ziyadatallah found it prudent to retire from Al-Urbus or Laribus, which

had been his headquarters, and entrench himself in Raqqada, one of the

two capitals of his kingdom, Kairawan being the other. Ziyadatallah is

charged by the chroniclers with dissoluteness and levity, and even

cowardice: after his retreat the fortresses and towns in what now

constitute the department of Constantine and in Tunisia fell fast into

al-Shi'i's hands, and he was soon able to threaten Raqqada itself.

By March 909 Raqqada had become untenable, and Ziyadatallah resolved to

flee from his kingdom; taking with him his chief possessions, he made

for Egypt, and thence to 'Irak: his final fate is uncertain. The cities

Raqqada and Kairawan were immediately occupied by Al-Shi'i, who

proceeded to send governors to the other places of importance in what

had been the Aghlabite kingdom, and to strike new coins, which, however,

bore no sovereign's name. Orders were given that the Shi'ite

peculiarities should be introduced into public worship.

In May 909 al-Shi'i led a tremendous army westwards to the kingdom of

Tahert, where he put an end to the Rustamite dynasty, and appointed a

governor of his own: he thence proceeded to Sijilmasa where 'Obaidallah

lay imprisoned, with the intention of releasing him and placing him on

the throne. After a brief attempt at resistance, the governor fled, and

al-Shi'i entered the city, released 'Obaidallah and presented him to the

army as the long-promised Imam. The day is given as the 26th of August

909. 'Obaidallah had been in prison more than three years. Whether his

identity with the Mahdi for whom al-Shi'i had been fighting was known to

the governor of Sijilmasa is uncertain. If it was, the governor and his

master the Aghlabite sovereign might have been expected to make use of

their knowledge and outwit al-Shi'i by putting his Mahdi to death.

Opponents of the Fatimites assert that this was actually done, and that

the Mahdi presented to the army was not the real 'Obaidallah, but (as

usual) a Jewish captive, who had been suborned to play the role.

The chief command was now assumed by 'Obaidallah, who took the title

"al-Mahdi, Commander of the Faithful," thereby claiming the headship of

the whole Moslem world: Raqqada was at the first made the seat of the

court, and the Shi'ite doctrines were enforced on the inhabitants, not

without encountering some opposition. Revolts which arose in different

parts of the Aghlabite kingdom were, however, speedily quelled.

The course followed by 'Obaidallah in governing independently of

al-Shi'i soon led to dissatisfaction on the part of the latter, who,

urged on it is said by his brother, decided to dethrone their Mahdi, and

on the occasion of an expedition to Tenes, which al-Shi'i- commanded,

organized a conspiracy with that end. The conspiracy was betrayed to

'Obaidallah, who took steps to defeat it, and on the last day of July

911 contrived to assassinate both al-Shi'i and his brother. Thus the

procedure which had characterized the accession of the 'Abbasid dynasty

was repeated. It has been conjectured that these assassinations lost the

Fatimites the support of the organization that continued to exist in the

East, whence the Carmathians figure as an independent and even hostile

community, though they appear to have been amenable to the influence of

the African caliph.

'Obaidallah had now to face the dissatisfaction of the tribes whose

allegiance al-Shi'i had won, especially the Kutama, Zenata and Lawata:

the uprising of the first assumed formidable proportions, and they even

elected a Mahdi of their own, one Kadu b. Mu'arik al-Mawati, who

promulgated a new revelation for their guidance. They were finally

defeated by 'Obaidallah's son Abu'l-Qasim Mahommed, who took

Constantine, and succeeded in capturing the new Mahdi, whom he brought

to Raqqada. Other opponents were got rid of by 'Obaidallah by ruthless

executions. By the middle of the year 913 by his own and his son's

efforts he had brought his kingdom into order. After the style of most

founders of dynasties he then selected a site for a new capital, to be

called after his title Mahdia (q.v.), on a peninsula called Hamma (Cape

Africa) S.S.E. of Kairawan. Eight years were spent in fortifying this

place, which in 921 was made the capital of the empire.

After defeating internal enemies 'Obaidallah turned his attention to the

remaining 'Abbasid possessions in Africa, and his general Habasah b.

Yusuf in the year 913 advanced along the northern coast, taking various

places, including the important town of Barca, his progress, it is said,

being marked by great cruelty. He then advanced towards Egypt, and

towards the end of July 914, being reinforced by Abu'l-Qasim, afterwards

al-Qa'im, entered Alexandria. The danger led to measures of unusual

energy being taken by the Bagdad caliph Moqtadir, an army being sent to

Egypt under Mu'nis, and a special post being organized between that

country and Bagdad to convey messages uninterruptedly. The Fatimite

forces were defeated, partly owing to the insubordination of the general

Habasah, in the winter of 914, and returned to Barca and Kairawan with

great loss.

A second expedition was undertaken against Egypt in the year 919, and on

the 10th of July Alexandria was entered by Abu'l-Qasim, who then

advanced southward, seizing the Fayum and Ushmunain (Eshmunain). He was

presently reinforced by a fleet, which, however, was defeated at Rosetta

in March of the year 920 by a fleet despatched from Tarsus by the

'Abbasid caliph Moqtadir, most of the vessels being burned. Through the

energetic measures of the caliph, who sent repeated reinforcements to

Fostat, Abu'l-Qasim was compelled in the spring of 921 to evacuate the

places which he had seized, and return to the west with the remains of

his army, which had suffered much from plague as well as defeat on the

field. On his return he found that the court had migrated from Raqqada

to the new capital Mahdia (q.v.). Meanwhile other expeditions had been

despatched by 'Obaidallah towards the west, and Nekor (Nakur) and Fez

had been forced to acknowledge his sovereignty.

The remaining years of 'Obaidallah's reign were largely spent in dealing

with uprisings in various parts of his dominions, the success of which

at times reduced the territory in which he was recognized to a small

area.

'Obaidallah died on the 4th of March 933, and was succeeded by

Abu'l-Qasim, who took the title al-Qa'im biamr allah. He immediately

after his accession occupied himself with the reconquest of Fez and

Nekor, which had revolted during the last years of the former caliph. He

also despatched a fleet under Ya'qub b. Ishaq, which ravaged the coast

of France, took Genoa, and plundered the coast of Calabria before

returning to Africa. A third attempt made by him to take Egypt resulted

in a disastrous defeat at Dhat al-Human, after which the remains of the

expedition retreated in disorder to Barca.

The later years of the reign of Qa'im were troubled by the uprising of

Abu Yazid Makhlad al-Zenati, a leader who during the former reign had

acquired a following among the tribes inhabiting the Jebel Aures,

including adherents of the 'Ibadi sect. After having fled for a time to

Mecca, this person returned in 937 to Tauzar (Touzer), the original seat

of his operations, and was imprisoned by Qa'im's order. His sons, aided

by the powerful tribe Zenata, succeeded in forcing the prison, and

releasing their father, who continued to organize a conspiracy on a vast

scale, and by the end of 943 was strong enough to take the field against

the Fatimite sovereign, whom he drove out of Kairawan. Abu Yazid

proclaimed himself a champion of Sunni doctrine against the Shi'is, and

ordered the legal system of Malik to be restored in place of that

introduced by the Fatimites. Apparently the doctrines of the latter has

as yet won little popularity, and Abu Yazid won an enormous following,

except among the Kutama, who remained faithful to Qa'im. On the last day

of October 944, an engagement was fought between Kairawan and Mahdia at

a place called al-Akhawan, which resulted in the rout of Qa'im's forces,

and the caliph's being shortly after shut up in his capital, the suburbs

of which he defended by a trench. Abu Yazid's forces were ill-suited to

maintain a protracted siege, and since, owing to the former caliph's

forethought, the capital was in a condition to hold out for a long time,

many of them deserted and the besiegers gained no permanent advantage.

After the siege had lasted some ten months Abu Yazid was compelled to

raise it (September 945); the struggle, however, did not end with that

event, and for a time the caliph and Abu Yazid continued to fight with

varying fortune, while anarchy prevailed over most of the caliph's

dominions. On the 13th of January 946, Abu Yazid shut up Qa'im's forces

in Susa which he began to besiege, and attempted to take by storm.

On the 18th of May 945, while Abu Yazid was besieging Susa, the caliph

al-Qa'im died at Mahdia, and was succeeded by his son Isma'il, who took

the title Mansur. He almost immediately relieved Susa by sending a

fleet, which joining with the garrison inflicted a severe defeat on Abu

Yazid, who had to evacuate Kairawan also; but though the cities were

mainly in the hands of Fatimite prefects, Abu Yazid was able to maintain

the field for more than two years longer, while his followers were

steadily decreasing in numbers, and he was repeatedly driven into

fastnesses of the Sahara. In August 947 his last stronghold was taken,

and he died of wounds received in defending it. His sons carried on some

desultory warfare against Mansur after their father's death. A town

called Man[s.]ura or Sabra was built adjoining Kairawan to celebrate the

decisive victory over Abu Yazid, which, however, did not long preserve

its name. The exhausted condition of north-west Africa due to the

protracted civil war required some years of peace for recuperation, and

further exploits are not recorded for Mansur, who died on the 19th of

March 952.

His son, Abu Tamim Ma'add, was twenty-two years of age at the time, and

succeeded his father with the title Mo'izz lidin allah. His authority

was acknowledged over the greater part of the region now constituting

Morocco, Algeria and Tunisia, as well as Sicily, and he appears to have

had serious thoughts of endeavouring to annex Spain. At an early period

in his reign he made Jauhar, who had been secretary under the former

caliph, commander of the forces, and the services rendered by this

person to the dynasty made him count as its second founder after

al-Shi'i. In the years 958 and 959 he was sent westwards to reduce Fez

and other places where the authority of the Fatimite caliph had been

repudiated, and after a successful expedition advanced as far as the

Atlantic. As early as 966 the plan of attempting a fresh invasion of

Egypt was conceived, and preparations made for its execution; but it was

delayed, it is said at the request of the caliph's mother, who wished to

make a pilgrimage to Mecca first; and her honourable treatment by Kafur

when she passed through Egypt induced the caliph to postpone the

invasion till that sovereign's death.

In August 972 Mo'izz resolved to follow Jauhar's pressing invitation to

enter his new capital Cairo. With his arrival there the centre of the

Fatimite power was transferred from Mahdia and Kairawan to Egypt, and

their original dominion became a province called al-Maghrib, which

immediately fell into the hands of a hereditary dynasty, the Zeirids,

acknowledging Fatimite suzerainty. The first sovereign was Bulukkin,

also called Abu'l-Futuh Yusuf, appointed by Mo'izz as his viceroy on the

occasion of his departure for Egypt: separate prefects were appointed

for Sicily and Tripoli; and at the first the minister of finance was to

be an official independent of the governor of the Maghrib. On the death

of Bulukkin in 984 he was succeeded by a son who took the royal title

al-Mansur, under whose rule an attempt was made by the Kutama,

instigated by the caliph, to shake off the yoke of the Zeirids, who

originated from the Sanhaja tribe. This attempt was defeated by the

energy of Mansur in 988; and the sovereignty of the Fatimites in the

Maghrib became more and more confined to recognition in public prayer

and on coins, and the payment of tribute and the giving of presents to

the viziers at Cairo. The fourth ruler of the Zeirid dynasty, called

Mo'izz, endeavoured to substitute 'Abbasid suzerainty for Fatimite: his

land was invaded by Arab colonies sent by the Fatimite caliph, with whom

in 1051 Mo'izz fought a decisive engagement, after which the dominion of

the Zeirids was restricted to the territory adjoining Mahdia; a number

of smaller kingdoms rising up around them. The Zeirids were finally

overthrown by Roger II. of Sicily in 1148.

After the death of al-Adid, the last Fatimite caliph in Egypt, some

attempts were made to place on the throne a member of the family, and at

one time there seemed a chance of the Assassins, who formed a branch of

the Fatimite sect, assisting in this project. In 1174 a conspiracy for

the restoration of the dynasty was organized by 'Umarah of Yemen, a

court poet, with the aid of eight officials of the government: it was

discovered and those who were implicated were executed. Two persons

claiming Fatimite descent took the royal titles al-Mo'tasim billah and

al-Hamid lillah in the years 1175 and 1176 respectively; and as late as

1192 we hear of pretenders in Egypt. Some members of the family are

traceable till near the end of the 7th century of Islam.

The doctrines of the Fatimites as a sect, apart from their claim to the

sovereignty in Islam, are little known, and we are not justified in

identifying them with those of the Assassins, the Carmathians or the

Druses, though all these sects are connected with them in origin. A

famous account is given by Maqrizi of a system of education by which the

neophyte had doubts gently instilled into his mind till he was prepared

to have the allegorical meaning of the Koran set before him, and to

substitute some form of natural for revealed religion. In most accounts

of the early days of the community it is stated that the permission of

wine-drinking and licentiousness, and the community of wives and

property formed part of its tenets. There is little in the recorded

practice of the Fatimite state to confirm or justify these assertions;

and they appear to have differed from orthodox Moslems rather in small

details of ritual and law than in deep matters of doctrine.

AUTHORITIES.--F. Wustenfeld, _Geschichte der Fatimiden Chalifen_

(Gottingen, 1881); E. Mercier, _Histoire de l'Afrique Septentrionale_

(Paris, 1888); M.J. de Goeje, _Memoire sur les Carmathes de Bahrain et

les Fatimides_ (2nd ed., Leiden, 1886); P. Casanova, "Memoire sur les

derniers Fatimides," _Mem. Miss. archeologique au Caire_, vol. vi.;

for the lives of 'Obaidallah and Abu Yazi-d, Cherbonneau in the

_Journal Asiatique_, ser. iv. vol. 20, and ser. v. vol. 5. See also

EGYPT: _History_, sect. Mahommedan. (D. S. M.*)

FAUBOURG, the French name for a portion of a town which lies outside the

walls, hence properly a suburb. The name survives in certain parts of

Paris, such as the Faubourg St Antoine, and the Faubourg St Germain,

&c., which have long since ceased to be suburbs and have become portions

of the town itself. The origin of the word is doubtful. The earlier

spelling _faux-bourg_, and the occurrence in medieval Latin of

_falsus-burgus_ (see Ducange, _Glossarium_, s.v. "Falsus-Burgus"), was

taken as showing its obvious origin and meaning, the sham or

quasi-borough. The generally accepted derivation is from _fors_, outside

(Lat. _foris_, outside the gates), and _bourg_. It is suggested that the

word is the French adaptation of the Ger. _Pfahlburger_, the burghers of

the pale, i.e. outside the walls but within the pale.

FAUCES (a Latin plural word for "throat"; the singular _faux_ is rarely

found), in anatomy, the hinder part of the mouth, which leads into the

pharynx; also an architectural term given by Vitruvius to narrow

passages on either side of the tablinum, through which access could be

obtained from the atrium to the peristylar court in the rear.

FAUCHER, LEONARD JOSEPH [LEON] (1803-1854), French politician and

economist, was born at Limoges on the 8th of September 1803. When he was

nine years old the family removed to Toulouse, where the boy was sent to

school. His parents were separated in 1816, and Leon Faucher, who

resisted his father's attempts to put him to a trade, helped to support

himself and his mother during the rest of his school career by designing

embroidery and needlework. As a private tutor in Paris he continued his

studies in the direction of archaeology and history, but with the

revolution of 1830 he was drawn into active political journalism on the

Liberal side. He was on the staff of the _Temps_ from 1830 to 1833, when

he became editor of the _Constitutionnel_ for a short time. A Sunday

journal of his own, _Le Bien public_, proved a disastrous financial

failure; and his political independence having caused his retirement

from the _Constitutionnel_, he joined in 1834 the _Courrier francais_,

of which he was editor from 1839 until 1842, when the paper changed

hands. Faucher belonged in policy to the dynastic Left, and consistently

preached moderation to the more ardent Liberals. On resigning his

connexion with the _Courrier francais_ he gave his attention chiefly to

economic questions. He advocated a customs union between the Latin

countries to counter-balance the German Zollverein, and in view of the

impracticability of such a measure narrowed his proposal in 1842 to a

customs union between France and Belgium. In 1843 he visited England to

study the English social system, publishing the results of his

investigations in a famous series of _Etudes sur l'Angleterre_ (2 vols.,

1845), published originally in the _Revue des deux mondes_. He helped to

organize the Bordeaux association for free-trade propaganda, and it was

as an advocate of free trade that he was elected in 1847 to the chamber

of deputies for Reims. After the revolution of 1848 he entered the

Constituent Assembly for the department of Marne, where he opposed many

Republican measures--the limitation of the hours of labour, the creation

of the national relief works in Paris, the abolition of the death

penalty and others. Under the presidency of Louis Napoleon he became

minister of public works, and then minister of the interior, but his

action in seeking to influence the coming elections by a circular letter

addressed to the prefects was censured by the Constituent Assembly, and

he was compelled to resign office on the 14th of May 1849. In 1851 he

was again minister of the interior until Napoleon declared his intention

of resorting to universal suffrage. After the _coup d'etat_ of December

he refused a seat in the consultative commission instituted by Napoleon.

He had been elected a member of the Academy of Moral and Political

Science in 1849, and his retirement from politics permitted a return to

his writings on economics. He had been to Italy in search of health in

1854, and was returning to Paris on business when he was seized by

typhoid at Marseilles, where he died on the 14th of December 1854.

His miscellaneous writings were collected (2 vols., 1856) as _Melanges

d'economie politique et de finance_, and his speeches in the

legislature are printed in vol. ii. of _Leon Faucher, biographie et

correspondance_ (2 vols., 2nd ed., Paris, 1875).

FAUCHET, CLAUDE (1530-1601), French historian and antiquary, was born at

Paris on the 3rd of July 1530. Of his early life few particulars are

known. He applied himself to the study of the early French chroniclers,

and proposed to publish extracts which would throw light on the first

periods of the monarchy. During the civil wars he lost a large part of

his books and manuscripts in a riot, and was compelled to leave Paris.

He then settled at Marseilles. Attaching himself afterwards to Cardinal

de Tournon, he accompanied him in 1554 to Italy, whence he was several

times sent on embassies to the king, with reports on the siege of Siena.

His services at length procured him the post of president of the chambre

des monnaies, and thus enabled him to resume his literary studies.

Having become embarrassed with debt, he found it necessary, at the age

of seventy, to sell his office; but the king, amused with an epigram,

gave him a pension, with the title of historiographer of France. Fauchet

has the reputation of an impartial and scrupulously accurate writer; and

in his works are to be found important facts not easily accessible

elsewhere. He was, however, entirely uncritical, and his style is

singularly inelegant. His principal works (1579, 1599) treat of Gaulish

and French antiquities, of the dignities and magistrates of France, of

the origin of the French language and poetry, of the liberties of the

Gallican church, &c. A collected edition was published in 1610. Fauchet

took part in a translation of the _Annals_ of Tacitus (1582). He died at

Paris about the close of 1601.

FAUCHET, CLAUDE (1744-1793), French revolutionary bishop, was born at

Dornes (Nievre) on the 22nd of September 1744. He was a curate of the

church of St Roch, Paris, when he was engaged as tutor to the children

of the marquis of Choiseul, brother of Louis XV.'s minister, an

appointment which proved to be the first step to fortune. He was

successively grand vicar to the archbishop of Bourges, preacher to the

king, and abbot of Montfort-Lacarre. The "philosophic" tone of his

sermons caused his dismissal from court in 1788 before he became a

popular speaker in the Parisian sections. He was one of the leaders of

the attack on the Bastille, and on the 5th of August 1789 he delivered

an eloquent discourse by way of funeral sermon for the citizens slain on

the 14th of July, taking as his text the words of St Paul, "Ye have been

called to liberty." He blessed the tricolour flag for the National

Guard, and in September was elected to the Commune, from which he

retired in October 1790. During the next winter he organized within the

Palais Royal the "Social Club of the Society of the Friends of Truth,"

presiding over crowded meetings under the self-assumed title of

_procureur general de la verite_. Nevertheless, events were marching

faster than his opinions, and the last occasion on which he carried his

public with him was in a sermon preached at Notre Dame on the 14th of

February 1791. In May he became constitutional bishop of Calvados, and

was presently returned by the department to the Legislative Assembly,

and afterwards to the Convention. At the king's trial he voted for the

appeal to the people and for the penalty of imprisonment. He protested

against the execution of Louis XVI. in the _Journal des amis_ (January

26, 1793), and next month was denounced to the Convention for

prohibiting married priests from the exercise of the priesthood in his

diocese. He remained secretary to the Convention until the accusation of

the Girondists in May 1793. In July he was imprisoned on the charge of

supporting the federalist movement at Caen, and of complicity with

Charlotte Corday, whom he had taken to see a sitting of the Convention

on her arrival in Paris. Of the second of these charges he was certainly

innocent. With the Girondist deputies he was brought before the

revolutionary tribunal on the 30th of October, and was guillotined on

the following day.

See _Memoires ... ou Lettres de Claude Fauchet_ (5th ed., 1793);

_Notes sur Claude Fauchet_ (Caen, 1842).

FAUCIT, HELENA SAVILLE (1817-1898), English actress, the daughter of

John Saville Faucit, an actor, was born in London. Her first London

appearance was made on the 5th of January 1836 at Covent Garden as Julia

in _The Hunchback_. Her success in this was so definitely confirmed by

her subsequent acting of Juliet, Lady Teazle, Beatrice, Imogen and

Hermione, that within eighteen months she was engaged by Macready as

leading lady at Covent Garden. There, besides appearing in several

Shakespearian characters, she created the heroine's part in Lytton's

_Duchess de la Valliere_ (1836), _Lady of Lyons_ (1838), _Richelieu_

(1839), _The Sea Captain_ (1839), _Money_ (1840), and Browning's

_Strafford_ (1837). After a visit to Paris and a short season at the

Haymarket, she joined the Drury Lane company under Macready early in

1842. There she played Lady Macbeth, Constance in _King John_, Desdemona

and Imogen, and took part in the first production of Westland Marston's

_Patrician's Daughter_ (1842) and Browning's _Blot on the Scutcheon_

(1843). Among her successful tours was included a visit to Paris in

1844-1845, where she acted with Macready in several Shakespearian plays.

In 1851 she was married to Mr (afterwards Sir) Theodore Martin, but

still acted occasionally for charity. One of her last appearances was as

Beatrice, on the opening of the Shakespeare Memorial at

Stratford-on-Avon on the 23rd of April 1879. In 1881 there appeared in

_Blackwood's Magazine_ the first of her _Letters on some of

Shakespeare's Heroines_, which were published in book form as _On Some

of Shakespeare's Female Characters_ (1885). Lady Martin died at her home

near Llangollen in Wales on the 31st of October 1898. There is a tablet

to her in the Shakespeare Memorial with a portrait figure, and the

marble pulpit in the Shakespeare church--with her portrait as Saint

Helena--was given in her memory by her husband.

See Sir Theodore Martin's _Helena Faucit_ (1900).

FAUJAS DE SAINT-FOND, BARTHELEMY (1741-1819), French geologist and

traveller, was born at Montelimart on the 17th of May 1741. He was

educated at the Jesuits' College at Lyons; afterwards he went to

Grenoble, applied himself to the study of law, and was admitted advocate

to the parliament. He rose to be president of the seneschal's court

(1765), a post which he honourably filled, but the duties of which

became irksome, as he had early developed a love of nature and his

favourite relaxation was found in visits to the Alps. There he began to

study the forms, structure, composition and superposition of rocks. In

1775 he discovered in the Velay a rich deposit of pozzuolana, which in

due course was worked by the government. In 1776 he put himself in

communication with Buffon, who was not slow to perceive the value of his

labours. Invited by Buffon to Paris, he quitted the law, and was

appointed by Louis XVI. assistant naturalist to the museum, to which

office was added some years later (1785, 1788) that of royal

commissioner for mines. One of the most important of his works was the

_Recherches sur les volcans eteints du Vivarais et du Velay_, which

appeared in 1778. In this work, rich in facts and observations, he

developed his theory of the origin of volcanoes. In his capacity of

commissioner for mines Faujas travelled in almost all the countries of

Europe, everywhere devoting attention to the nature and constituents of

the rocks. It was he who first recognized the volcanic nature of the

basaltic columns of the cave of Fingal (Staffa), although the island was

visited in 1772 by Sir Joseph Banks, who remarked that the stone "is a

coarse kind of _Basaltes_, very much resembling the Giants' Causeway in

Ireland" (Pennant's _Tour in Scotland and Voyage to the Hebrides_).

Faujas's _Voyage en Angleterre, en Ecosse et aux Iles Hebrides_ (1797)

is full of interest--containing anecdotes of Sir Joseph Banks and Dr

John Whitehurst, and an amusing account of "The Dinner of an Academic

Club" (the Royal Society), and has been translated into English (2

vols., 1799). Having been nominated in 1793 professor at the Jardin des

Plantes, he held this post till he was nearly eighty years of age,

retiring in 1818 to his estate of Saint-Fond in Dauphine. Faujas took a

warm interest in the balloon experiments of the brothers Montgolfier,

and published a very complete _Description des experiences de la machine

aerostatique de MM. Montgolfier_, &c. (1783, 1784). He contributed many

scientific memoirs to the _Annales_ and the _Memoires_ of the museum of

natural history. Among his separate works, in addition to those already

named are--_Histoire naturelle de la province de Dauphine_ (1781, 1782);

_Mineralogie des volcans_ (1784); and _Essai de geologie_ (1803-1809).

Faujas died on the 18th of July 1819.

FAULT (Mid. Eng. _faute_, through the French, from the popular Latin use

of _fallere_, to fail; the original _l_ of the Latin being replaced in

English in the 15th century), a failing, mistake or defect.

[Illustration: FIG. 1.--Section of clean-cut fault.]

[Illustration: FIG. 2.--Section of strata, bent at a line of fault.]

In geology, the term is given to a plane of dislocation in a portion of

the earth's crust; synonyms used in mining are "trouble," "throw" and

"heave"; the German equivalent is _Verwerfung_, and the French _faille_.

Faults on a small scale are sometimes sharply-defined planes,[1] as if

the rocks had been sliced through and fitted together again after being

shifted (fig. 1). In such cases, however, the harder portions of the

dislocated rocks will usually be found "slickensided." More frequently

some disturbance has occurred on one or both sides of the fault.

Sometimes in a series of strata the beds on the side which has been

pushed up are bent down against the fault, while those on the opposite

side are bent up (fig. 2). Most commonly the rocks on both sides are

considerably broken, jumbled and crumpled, so that the line of fracture

is marked by a belt or wall-like mass of fragmentary rock, _fault-rock_,

which may be several yards in breadth. Faults are to be distinguished

from joints and fissures by the fact that there must have been a

movement of the rock on one side of the fault-plane relatively to that

on the other side. The trace of a fault-plane at the surface of the

earth is a line (or belt of fault-rock), which in geological mapping is

often spoken of as a "fault-line" or "line of fault." Fig. 3 represents

the plan of a simple fault; quite frequently, however, the main fault

subdivides at the extremities into a number of minor faults (fig. 4), or

the main fault may be accompanied by lateral subordinate faults (fig.

5), some varieties of which have been termed _flaws_ or _Blatts_.

[Illustration: FIG. 3.--Plan of simple fault.]

[Illustration: FIG. 4.--Plan of a fault splitting into minor faults.]

"Fault-planes" are sometimes perpendicular to the horizon, but more

usually they are inclined at a greater or lesser angle. The angle made

by the fault-plane with the vertical is the _hade_ of the fault (if the

angle of inclination were measured from the horizon, as in determining

the "dip" of strata, this would be expressed as the "dip of the fault").

In figs. 1 and 2 the faults are hading towards the right of the reader.

The amount of dislocation as measured along a fault-plane is the

_displacement_ of the fault (for an illustration of these terms see fig.

18, where they are applied to a thrust fault); the vertical displacement

is the _throw_ (Fr. _rejet_); the horizontal displacement, which even

with vertical movement must arise in all cases where the faults are not

perpendicular to the horizon and the strata are not horizontal, is known

as the _heave_. In fig. 6 the displacement is equal to the throw in the

fault A; in the fault B the displacement is more than twice as great as

in A, while the throw is the same in both; the fault A has no heave, in

B it is considerable. The rock on that side of a fault which has dropped

relatively to the rock on the other is said to be upon the downthrow

side of the fault; conversely, the relatively uplifted portion is the

upthrow side. The two fault faces are known as the "hanging-wall" and

the "foot-wall."

[Illustration: FIG. 5.--Plan of main fault, with branches.]

[Illustration: FIG. 6.--Section of a vertical and inclined fault.]

[Illustration: FIG. 7.--Reversed fault, Liddesdale.]

The relationship that exists between the hade and the direction of throw

has led to the classification of faults into "normal faults," which hade

under the downthrow side, or in other words, those in which the

hanging-wall has dropped; and "reversed faults," which hade beneath the

upthrow side, that is to say, the foot-wall exhibits a relative sinking.

Normal faults are exemplified in figs. 1, 2, and 6; in the latter the

masses A and B are on the downthrow sides, C is upthrown. Fig. 7

represents a small reversed fault. Normal faults are so called because

they are more generally prevalent than the other type; they are

sometimes designated "drop" or "gravity" faults, but these are

misleading expressions and should be discountenanced. Normal faults are

regarded as the result of stretching of the crust, hence they have been

called "tension" faults as distinguished from reversed faults, which are

assumed to be due to pressure. It is needful, however, to exercise great

caution in accepting this view except in a restricted and localized

sense, for there are many instances in which the two forms are

intimately associated (see fig. 8), and a whole complex system of faults

may be the result of horizontal (tangential) pressure alone or even of

direct vertical uplift. It is often tacitly assumed that most normal

and reversed faults are due to simple vertical movements of the

fractured crust-blocks; but this is by no means the case. What is

actually observed in examining a fault is the _apparent_ direction of

motion; but the present position of the dislocated masses is the result

of _real_ motion or series of motions, which have taken place along the

fault-plane at various angles from horizontal to vertical; frequently it

can be shown that these movements have been extremely complicated. The

striations and "slickensides" on the faces of a fault indicate only the

direction of the last movement.

[Illustration: FIG. 8.--Diagram of gently undulating strata cut by a

fault, with alternate throw in opposite directions.]

[Illustration: FIG. 9.--Section of strata cut by step faults.]

[Illustration: FIG. 10.--Trough faults.]

[Illustration: FIG. 11.--Plan of a strike fault.]

A broad monoclinal fold is sometimes observed to pass into a fault of

gradually increasing throw; such a fault is occasionally regarded as

pivoted at one end. Again, a faulted mass may be on the downthrow side

towards one end, and on the upthrow side towards the other, the movement

having taken place about an axis approximately normal to the

fault-plane, the "pivot" in this case being near the centre. From an

example of this kind it is evident that the same fault may at the same

time be both "normal" and "reversed" (see fig. 8). When the principal

movement along a highly inclined fault-plane has been approximately

horizontal, the fault has been variously styled a _lateral-shift_,

_transcurrent fault_, _transverse thrust_ or a _heave fault_. The

horizontal component in faulting movements is more common than is often

supposed.

[Illustration: FIG. 12.--Section across the plan, fig. 11.]

A single normal fault of large throw is sometimes replaced by a series

of close parallel faults, each throwing a small amount in the same

direction; if these subordinate faults occur within a narrow width of

ground they are known as _distribution faults_; if they are more widely

separated they are called _step faults_ (fig. 9). Occasionally two

normal faults hade towards one another and intersect, and the rock mass

between them has been let down; this is described as a _trough fault_

(fig. 10). A fault running parallel to the strike of bedded rocks is a

_strike fault_; one which runs along the direction of the dip is a _dip

fault_; a so-called _diagonal fault_ takes a direction intermediate

between these two directions. Although the effects of these types of

fault upon the outcrops of strata differ, there are no intrinsic

differences between the faults themselves.

[Illustration: FIG. 13.--Plan of strata cut by a dip fault.]

[Illustration: FIG. 14.--Plan of strata traversed by a diminishing

strike fault.]

The effect of normal faults upon the outcrop may be thus briefly

summarized:--a strike fault that hades with the direction of the dip may

cause beds to be cut out at the surface on the upthrow side; if it hades

against the dip direction it may repeat some of the beds on the upthrow

side (figs. 11 and 12). With dip faults the crop is carried forward

(down the dip) on the upthrow side. The perpendicular distance between

the crop of the bed (dike or vein) on opposite sides of the fault is the

"offset." The offset decreases with increasing angle of dip and

increases with increase in the throw of the fault (fig. 13). Faults

which run obliquely across the direction of dip, if they hade with the

dip of the strata, will produce offset with "gap" between the outcrops;

if they hade in the opposite direction to the dip, offset with "overlap"

is caused: in the latter case the crop moves forward (down dip) on the

denuded upthrow side, in the former it moves backward. The effect of a

strike fault of diminishing throw is seen in fig. 14. Faults crossing

folded strata cause the outcrops to approach on the upthrow side of a

syncline and tend to separate the outcrops of an anticline (figs. 15,

16, 17).

In the majority of cases the upthrown side of a fault has been so

reduced by denudation as to leave no sharp upstanding ridge; but

examples are known where the upthrown side still exists as a prominent

cliff-like face of rock, a "fault-scarp"; familiar instances occur in

the Basin ranges of Utah, Nevada, &c., and many smaller examples have

been observed in the areas affected by recent earthquakes in Japan, San

Francisco and other places. But although there may be no sharp cliff,

the effect of faulting upon topographic forms is abundantly evident

wherever a harder series of strata has been brought in juxtaposition to

softer rocks. By certain French writers, the upstanding side of a

faulted piece of ground is said to have a _regard_, thus the faults of

the Jura Mountains have a "_regard francais_," and in the same region it

has been observed that in curved faults the convexity is directed the

same way as the _regard_. Occasionally one or more parallel faults have

let down an intervening strip of rock, thereby forming "fault valleys"

or _Graben_ (_Grabensenken_); the Great Rift Valley is a striking

example. On the other hand, a large area of rock is sometimes lifted up,

or surrounded by a system of faults, which have let down the encircling

ground; such a fault-block is known also as a _horst_; a considerable

area of Greenland stands up in this manner.

[Illustration: FIG. 15.--Plan of an anticline (A) and syncline (S),

dislocated by a fault.]

[Illustration: FIG. 16.--Section along the upcast side of the fault in

fig. 15.]

Faults have often an important influence upon water-supply by bringing

impervious beds up against pervious ones or vice versa, thus forming

underground dams or reservoirs, or allowing water to flow away that

would otherwise be conserved. Springs often rise along the outcrop of a

fault. In coal and metal mining it is evident from what has already been

said that faults must act sometimes beneficially, sometimes the reverse.

It is a common occurrence for fault-fissures and fault-rock to appear as

valuable mineral lodes through the infilling or impregnation of the

spaces and broken ground with mineral ores.

[Illustration: FIG. 17.--Section along the downcast side of same fault.]

[Illustration: FIG. 18.--Diagram to illustrate the terminology of faults

and thrusts.]

[Illustration: FIG. 19.--Section of a very large thrust in the Durness

Eriboll district, Scotland.]

In certain regions which have been subjected to very great crustal

disturbance a type of fault is found which possesses a very low

hade--sometimes only a few degrees from the horizontal--and, like a

reversed fault, hades beneath the upthrown mass; these are termed

_thrusts, overthrusts_, or _overthrust faults_ (Fr. _recouvrements,

failles de chevauchement, charriages_; Ger. _Uberschiebungen,

Ubersprunge, Wechsel, Fallenverwerfungen_). Thrusts should not be

confused with reversed faults, which have a strong hade. Thrusts play a

very important part in the N.W. highlands of Scotland, the Scandinavian

highlands, the western Alps, the Appalachians, the Belgian coal region,

&c. By the action of thrusts enormous masses of rock have been pushed

almost horizontally over underlying rocks, in some cases for several

miles. One of the largest of the Scandinavian thrust masses is 1120 m.

long, 80 m. broad, and 5000 ft. thick. In Scotland three grades of

thrusts are recognized, maximum, major, and minor thrusts; the last have

very generally been truncated by those of greater magnitude. Some of

these great thrusts have received distinguishing names, e.g. the Moine

thrust (fig. 19) and the Ben More thrust; similarly in the coal basin of

Mons and Valenciennes we find the _faille de Boussu_ and the _Grande

faille du midi_. Overturned folds are frequently seen passing into

thrusts. Bayley Willis has classified thrusts as (1) Shear thrusts, (2)

Break thrusts, (3) Stretch thrusts, and (4) Erosion thrusts.

Dr J.E. Marr ("Notes on the Geology of the English Lake District,"

_Proc. Geol. Assoc._, 1900) has described a type of fault which may be

regarded as the converse of a thrust fault. If we consider a series of

rock masses A, B, C--of which A is the oldest and undermost--undergoing

thrusting, say from south to north, should the mass C be prevented from

moving forward as rapidly as B, a low-hading fault may form between C

and B and the mass C may lag behind; similarly the mass B may lag behind

A. Such faults Dr Marr calls "lag faults." A mass of rock suffering

thrusting or lagging may yield unequally in its several parts, and those

portions tending to travel more rapidly than the adjoining masses in the

same sheet may be cut off by fractures. Thus the faster-moving blocks

will be separated from the slower ones by faults approximately normal to

the plane of movement: these are described as "tear faults."

Faults may occur in rocks of all ages; small local dislocations are

observable even in glacial deposits, alluvium and loess. A region of

faulting may continue to be so through more than one geological period.

Little is known of the mechanism of faulting or of the causes that

produce it; the majority of the text-book explanations will not bear

scrutiny, and there is room for extended observation and research. The

sudden yielding of the strata along a plane of faulting is a familiar

cause of earthquakes.

See E. de Margerie and A. Heim, _Les Dislocations de l'ecorce

terrestre_ (Zurich, 1888); A. Rothpletz, _Geotektonische Probleme_

(Stuttgart, 1894); B. Willis, "The Mechanics of Appalachian

Structure," _13th Ann. Rep. U.S. Geol. Survey_ (1891-1892, pub. 1893).

A prolonged discussion of the subject is given in _Economic Geology_,

Lancaster, Pa., U.S.A., vols. i. and ii. (1906, 1907).

(A. Ge.; J. A. H.)

Encyclopaedia Britannica, 11th Edition, "Fairbanks, Erastus" to "Fens" Volume 10, Slice 2 · 第 26 / 37 题