FOOTNOTE:

[1] _Nature_, lxiii. 127.

HUY (Lat. _Hoium_, and Flem. _Hoey_), a town of Belgium, on the right

bank of the Meuse, at the point where it is joined by the Hoyoux. Pop.

(1904), 14,164. It is 19 m. E. of Namur and a trifle less west of Liége.

Huy certainly dates from the 7th century, and, according to some, was

founded by the emperor Antoninus in A.D. 148. Its situation is

striking, with its grey citadel crowning a grey rock, and the fine

collegiate church (with a 13th-century gateway) of Notre Dame built

against it. The citadel is now used partly as a depot of military

equipment and partly as a prison. The ruins are still shown of the abbey

of Neumoustier founded by Peter the Hermit on his return from the first

crusade. He was buried there in 1115, and a statue was erected to his

memory in the abbey grounds in 1858. Neumoustier was one of seventeen

abbeys in this town alone dependent on the bishopric of Liége. Huy is

surrounded by vineyards, and the bridge which crosses the Meuse at this

point connects the fertile Hesbaye north of the river with the rocky and

barren Condroz south of it.

HUYGENS, CHRISTIAAN (1629-1695), Dutch mathematician, mechanician,

astronomer and physicist, was born at the Hague on the 14th of April

1629. He was the second son of Sir Constantijn Huygens. From his father

he received the rudiments of his education, which was continued at

Leiden under A. Vinnius and F. van Schooten, and completed in the

juridical school of Breda. His mathematical bent, however, soon diverted

him from legal studies, and the perusal of some of his earliest theorems

enabled Descartes to predict his future greatness. In 1649 he

accompanied the mission of Henry, count of Nassau, to Denmark, and in

1651 entered the lists of science as an assailant of the unsound system

of quadratures adopted by Gregory of St Vincent. This first essay

(_Exetasis quadraturae circuli_, Leiden, 1651) was quickly succeeded by

his _Theoremata de quadratura hyperboles, ellipsis, et circuli_; while,

in a treatise entitled _De circuli magnitudine inventa_, he made, three

years later, the closest approximation so far obtained to the ratio of

the circumference to the diameter of a circle.

Another class of subjects was now to engage his attention. The

improvement of the telescope was justly regarded as a _sine qua non_ for

the advancement of astronomical knowledge. But the difficulties

interposed by spherical and chromatic aberration had arrested progress

in that direction until, in 1655, Huygens, working with his brother

Constantijn, hit upon a new method of grinding and polishing lenses. The

immediate results of the clearer definition obtained were the detection

of a satellite to Saturn (the sixth in order of distance from its

primary), and the resolution into their true form of the abnormal

appendages to that planet. Each discovery in turn was, according to the

prevailing custom, announced to the learned world under the veil of an

anagram--removed, in the case of the first, by the publication, early in

1656, of the little tract _De Saturni luna observatio nova_; but

retained, as regards the second, until 1659, when in the _Systema

Saturnium_ the varying appearances of the so-called "triple planet" were

clearly explained as the phases of a ring inclined at an angle of 28° to

the ecliptic. Huygens was also in 1656 the first effective observer of

the Orion nebula; he delineated the bright region still known by his

name, and detected the multiple character of its nuclear star. His

application of the pendulum to regulate the movement of clocks sprang

from his experience of the need for an exact measure of time in

observing the heavens. The invention dates from 1656; on the 16th of

June 1657 Huygens presented his first "pendulum-clock" to the

states-general; and the _Horologium_, containing a description of the

requisite mechanism, was published in 1658.

His reputation now became cosmopolitan. As early as 1655 the university

of Angers had distinguished him with an honorary degree of doctor of

laws. In 1663, on the occasion of his second visit to England, he was

elected a fellow of the Royal Society, and imparted to that body in

January 1669 a clear and concise statement of the laws governing the

collision of elastic bodies. Although these conclusions were arrived at

independently, and, as it would seem, several years previous to their

publication, they were in great measure anticipated by the

communications on the same subject of John Wallis and Christopher Wren,

made respectively in November and December 1668.

Huygens had before this time fixed his abode in France. In 1665 Colbert

made to him on behalf of Louis XIV. an offer too tempting to be

refused, and between the following year and 1681 his residence in the

philosophic seclusion of the Bibliothèque du Roi was only interrupted by

two short visits to his native country. His _magnum opus_ dates from

this period. The _Horologium oscillatorium_, published with a dedication

to his royal patron in 1673, contained original discoveries sufficient

to have furnished materials for half a dozen striking disquisitions. His

solution of the celebrated problem of the "centre of oscillation" formed

in itself an important event in the history of mechanics. Assuming as an

axiom that the centre of gravity of any number of interdependent bodies

cannot rise higher than the point from which it fell, he arrived, by

anticipating in the particular case the general principle of the

conservation of _vis viva_, at correct although not strictly

demonstrated conclusions. His treatment of the subject was the first

successful attempt to deal with the dynamics of a system. The

determination of the true relation between the length of a pendulum and

the time of its oscillation; the invention of the theory of evolutes;

the discovery, hence ensuing, that the cycloid is its own evolute, and

is strictly isochronous; the ingenious although practically inoperative

idea of correcting the "circular error" of the pendulum by applying

cycloidal cheeks to clocks--were all contained in this remarkable

treatise. The theorems on the composition of forces in circular motion

with which it concluded formed the true prelude to Newton's _Principia_,

and would alone suffice to establish the claim of Huygens to the highest

rank among mechanical inventors.

In 1681 he finally severed his French connexions, and returned to

Holland. The harsher measures which about that time began to be adopted

towards his co-religionists in France are usually assigned as the motive

of this step. He now devoted himself during six years to the production

of lenses of enormous focal distance, which, mounted on high poles, and

connected with the eye-piece by means of a cord, formed what were called

"aerial telescopes." Three of his object-glasses, of respectively 123,

180 and 210 ft. focal length, are in the possession of the Royal

Society. He also succeeded in constructing an almost perfectly

achromatic eye-piece, still known by his name. But his researches in

physical optics constitute his chief title-deed to immortality. Although

Robert Hooke in 1668 and Ignace Pardies in 1672 had adopted a vibratory

hypothesis of light, the conception was a mere floating possibility

until Huygens provided it with a sure foundation. His powerful

scientific imagination enabled him to realize that all the points of a

wave-front originate partial waves, the aggregate effect of which is to

reconstitute the primary disturbance at the subsequent stages of its

advance, thus accomplishing its propagation; so that each primary

undulation is the envelope of an indefinite number of secondary

undulations. This resolution of the original wave is the well-known

"Principle of Huygens," and by its means he was enabled to prove the

fundamental laws of optics, and to assign the correct construction for

the direction of the extraordinary ray in uniaxial crystals. These

investigations, together with his discovery of the "wonderful

phenomenon" of polarization, are recorded in his _Traité de la lumière_,

published at Leiden in 1690, but composed in 1678. In the appended

treatise _Sur la Cause de la pesanteur_, he rejected gravitation as a

universal quality of matter, although admitting the Newtonian theory of

the planetary revolutions. From his views on centrifugal force he

deduced the oblate figure of the earth, estimating its compression,

however, at little more than one-half its actual amount.

Huygens never married. He died at the Hague on the 8th of June 1695,

bequeathing his manuscripts to the university of Leiden, and his

considerable property to the sons of his younger brother. In character

he was as estimable as he was brilliant in intellect. Although, like

most men of strong originative power, he assimilated with difficulty the

ideas of others, his tardiness sprang rather from inability to depart

from the track of his own methods than from reluctance to acknowledge

the merits of his competitors.

In addition to the works already mentioned, his _Cosmotheoros_--a

speculation concerning the inhabitants of the planets--was

printed posthumously at the Hague in 1698, and appeared almost

simultaneously in an English translation. A volume entitled _Opera

posthuma_ (Leiden, 1703) contained his "Dioptrica," in which the ratio

between the respective focal lengths of object-glass and eye-glass is

given as the measure of magnifying power, together with the shorter

essays _De vitris figurandis_, _De corona et parheliis_, &c. An early

tract _De ratiociniis in ludo aleae_, printed in 1657 with Schooten's

_Exercitationes mathematicae_, is notable as one of the first formal

treatises on the theory of probabilities; nor should his

investigations of the properties of the cissoid, logarithmic and

catenary curves be left unnoticed. His invention of the spiral

watch-spring was explained in the _Journal des savants_ (Feb. 25,

1675). An edition of his works was published by G. J.'s Gravesande, in

four quarto volumes entitled _Opera varia_ (Leiden, 1724) and _Opera

reliqua_ (Amsterdam, 1728). His scientific correspondence was edited

by P. J. Uylenbroek from manuscripts preserved at Leiden, with the

title _Christiani Hugenii aliorumque seculi XVII. virorum celebrium

exercitationes mathematicae et philosophicae_ (the Hague, 1833).

The publication of a monumental edition of the letters and works of

Huygens was undertaken at the Hague by the _Société Hollandaise des

Sciences_, with the heading _Oeuvres de Christian Huygens_ (1888),

&c. Ten quarto volumes, comprising the whole of his correspondence,

had already been issued in 1905. A biography of Huygens was prefixed

to his _Opera varia_ (1724); his _Éloge_ in the character of a French

academician was printed by J. A. N. Condorcet in 1773. Consult

further: P. J. Uylenbroek, _Oratio de fratribus Christiano atque

Constantino Hugenio_ (Groningen, 1838); P. Harting, _Christiaan

Huygens in zijn Leven en Werken geschetzt_ (Groningen, 1868); J. B. J.

Delambre, _Hist. de l'astronomie moderne_ (ii. 549); J. E. Montucla,

_Hist. des mathématiques_ (ii. 84, 412, 549); M. Chasles, _Aperçu

historique sur l'origine des méthodes en géometrie_, pp. 101-109; E.

Dühring, _Kritische Geschichte der allgemeinen Principien der

Mechanik_, Abschnitt (ii. 120, 163, iii. 227); A. Berry, _A Short

History of Astronomy_, p. 200; R. Wolf, _Geschichte der Astronomie_,

passim; Houzeau, _Bibliographie astronomique_ (ii. 169); F. Kaiser,

_Astr. Nach._ (xxv. 245, 1847); _Tijdschrift voor de Wetenschappen_

(i. 7, 1848); _Allgemeine deutsche Biographie_ (M. B. Cantor); J. C.

Poggendorff, _Biog. lit. Handwörterbuch_. (A. M. C.)

HUYGENS, SIR CONSTANTIJN (1596-1687), Dutch poet and diplomatist, was

born at the Hague on the 4th of September 1596. His father, Christiaan

Huygens, was secretary to the state council, and a man of great

political importance. At the baptism of the child, the city of Breda was

one of his sponsors, and the admiral Justinus van Nassau the other. He

was trained in every polite accomplishment, and before he was seven

could speak French with fluency. He was taught Latin by Johannes

Dedelus, and soon became a master of classic versification. He developed

not only extraordinary intellectual gifts but great physical beauty and

strength, and was one of the most accomplished athletes and gymnasts of

his age; his skill in playing the lute and in the arts of painting and

engraving attracted general attention before he began to develop his

genius as a writer. In 1616 he proceeded, with his elder brother, to the

university of Leiden. He stayed there only one year, and in 1618 went to

London with the English ambassador Dudley Carleton; he remained in

London for some months, and then went to Oxford, where he studied for

some time in the Bodleian Library, and to Woodstock, Windsor and

Cambridge; he was introduced at the English court, and played the lute

before James I. The most interesting feature of this visit was the

intimacy which sprang up between the young Dutch poet and Dr Donne, for

whose genius Huygens preserved through life an unbounded admiration. He

returned to Holland in company with the English contingent of the synod

of Dort, and in 1619 he proceeded to Venice in the diplomatic service of

his country; on his return he nearly lost his life by a foolhardy

exploit, namely, the scaling of the topmost spire of Strassburg

cathedral. In 1621 he published one of his most weighty and popular

poems, his _Batava Tempe_, and in the same year he proceeded again to

London, as secretary to the ambassador, Wijngaerdan, but returned in

three months. His third diplomatic visit to England lasted longer, from

the 5th of December 1621 to the 1st of March 1623. During his absence,

his volume of satires, _'t Costelick Mal_, dedicated to Jacob Cats,

appeared at the Hague. In the autumn of 1622 he was knighted by James I.

He published a large volume of miscellaneous poems in 1625 under the

title of _Otiorum libri sex_; and in the same year he was appointed

private secretary to the stadholder. In 1627 Huygens married Susanna

van Baerle, and settled at the Hague; four sons and a daughter were born

to them. In 1630 Huygens was called to a seat in the privy council, and

he continued to exercise political power with wisdom and vigour for many

years, under the title of the lord of Zuylichem. In 1634 he is supposed

to have completed his long-talked-of version of the poems of Donne,

fragments of which exist. In 1637 his wife died, and he immediately

began to celebrate the virtues and pleasures of their married life in

the remarkable didactic poem called _Dagwerck_, which was not published

till long afterwards. From 1639 to 1641 he occupied himself by building

a magnificent house and garden outside the Hague, and by celebrating

their beauties in a poem entitled _Hofwijck_, which was published in

1653. In 1647 he wrote his beautiful poem of _Oogentroost_ or "Eye

Consolation," to gratify his blind friend Lucretia van Trollo. He made

his solitary effort in the dramatic line in 1657, when he brought out

his comedy of _Trijntje Cornelis Klacht_, which deals, in rather broad

humour, with the adventures of the wife of a ship's captain at Zaandam.

In 1658 he rearranged his poems, and issued them with many additions,

under the title of _Corn Flowers_. He proposed to the government that

the present highway from the Hague to the sea at Scheveningen should be

constructed, and during his absence on a diplomatic mission to the

French court in 1666 the road was made as a compliment to the venerable

statesman, who expressed his gratitude in a descriptive poem entitled

_Zeestraet_. Huygens edited his poems for the last time in 1672, and

died in his ninety-first year, on the 28th of March 1687. He was buried,

with the pomp of a national funeral, in the church of St Jacob, on the

4th of April. His second son, Christiaan, the eminent astronomer, is

noticed separately.

Constantijn Huygens is the most brilliant figure in Dutch literary

history. Other statesmen surpassed him in political influence, and at

least two other poets surpassed him in the value and originality of

their writings. But his figure was more dignified and splendid, his

talents were more varied, and his general accomplishments more

remarkable than those of any other person of his age, the greatest age

in the history of the Netherlands. Huygens is the _grand seigneur_ of

the republic, the type of aristocratic oligarchy, the jewel and

ornament of Dutch liberty. When we consider his imposing character and

the positive value of his writings, we may well be surprised that he

has not found a modern editor. It is a disgrace to Dutch scholarship

that no complete collection of the writings of Huygens exists. His

autobiography, _De vita propria sermonum libri duo_, did not see the

light until 1817, and his remarkable poem, _Cluyswerck_, was not

printed until 1841. As a poet Huygens shows a finer sense of form than

any other early Dutch writer; the language, in his hands, becomes as

flexible as Italian. His epistles and lighter pieces, in particular,

display his metrical ease and facility to perfection. (E. G.)

HUYSMANS, the name of four Flemish painters who matriculated in the

Antwerp gild in the 17th century. Cornelis the elder, apprenticed in

1633, passed for a mastership in 1636, and remained obscure. Jacob,

apprenticed to Frans Wouters in 1650, wandered to England towards the

close of the reign of Charles II., and competed with Lely as a

fashionable portrait painter. He executed a portrait of the queen,

Catherine of Braganza, now in the national portrait gallery, and Horace

Walpole assigns to him the likeness of Lady Bellasys, catalogued at

Hampton Court as a work of Lely. His portrait of Izaak Walton in the

National Gallery shows a disposition to imitate the styles of Rubens and

Van Dyke. According to most accounts he died in London in 1696. Jan

Baptist Huysmans, born at Antwerp in 1654, matriculated in 1676-1677,

and died there in 1715-1716. He was younger brother to Cornelis Huysmans

the second, who was born at Antwerp in 1648, and educated by Gaspar de

Wit and Jacob van Artois. Of Jan Baptist little or nothing has been

preserved, except that he registered numerous apprentices at Antwerp,

and painted a landscape dated 1697 now in the Brussels museum. Cornelis

the second is the only master of the name of Huysmans whose talent was

largely acknowledged. He received lessons from two artists, one of whom

was familiar with the Roman art of the Poussins, whilst the other

inherited the scenic style of the school of Rubens. He combined the two

in a rich, highly coloured, and usually effective style, which, however,

was not free from monotony. Seldom attempting anything but woodside

views with fancy backgrounds, half Italian, half Flemish, he painted

with great facility, and left numerous examples behind. At the outset of

his career he practised at Malines, where he married in 1682, and there

too he entered into some business connexion with van der Meulen, for

whom he painted some backgrounds. In 1706 he withdrew to Antwerp, where

he resided till 1717, returning then to Malines, where he died on the

1st of June 1727.

Though most of his pictures were composed for cabinets rather than

churches, he sometimes emulated van Artois in the production of large

sacred pieces, and for many years his "Christ on the Road to Emmaus"

adorned the choir of Notre Dame of Malines. In the gallery of Nantes,

where three of his small landscapes are preserved, there hangs an

"Investment of Luxembourg," by van der Meulen, of which he is known to

have laid in the background. The national galleries of London and

Edinburgh contain each one example of his skill. Blenheim, too, and

other private galleries in England, possess one or more of his

pictures. But most of his works are on the European continent.

HUYSMANS, JORIS KARL (1848-1907), French novelist, was born at Paris on

the 5th of February 1848. He belonged to a family of artists of Dutch

extraction; he entered the ministry of the interior, and was pensioned

after thirty years' service. His earliest venture in literature, _Le

Drageoir à épices_ (1874), contained stories and short prose poems

showing the influence of Baudelaire. _Marthe_ (1876), the life of a

courtesan, was published in Brussels, and Huysmans contributed a story,

"Sac au dos," to _Les Soirées de Médan_, the collection of stories of

the Franco-German war published by Zola. He then produced a series of

novels of everyday life, including _Les Soeurs Vatard_ (1879), _En

Ménage_ (1881), and _À vau-l'eau_ (1882), in which he outdid Zola in

minute and uncompromising realism. He was influenced, however, more

directly by Flaubert and the brothers de Goncourt than by Zola. In

_L'Art moderne_ (1883) he gave a careful study of impressionism and in

_Certains_ (1889) a series of studies of contemporary artists, _À

Rebours_ (1884), the history of the morbid tastes of a decadent

aristocrat, des Esseintes, created a literary sensation, its caricature

of literary and artistic symbolism covering much of the real beliefs of

the leaders of the aesthetic revolt. In _Là-Bas_ Huysmans's most

characteristic hero, Durtal, makes his appearance. Durtal is occupied in

writing the life of Gilles de Rais; the insight he gains into Satanism

is supplemented by modern Parisian students of the black art; but

already there are signs of a leaning to religion in the sympathetic

figures of the religious bell-ringer of Saint Sulpice and his wife. _En

Route_ (1895) relates the strange conversion of Durtal to mysticism and

Catholicism in his retreat to La Trappe. In _La Cathédrale_ (1898),

Huysmans's symbolistic interpretation of the cathedral of Chartres, he

develops his enthusiasm for the purity of Catholic ritual. The life of

_Sainte Lydwine de Schiedam_ (1901), an exposition of the value of

suffering, gives further proof of his conversion; and _L'Oblat_ (1903)

describes Durtal's retreat to the Val des Saints, where he is attached

as an oblate to a Benedictine monastery. Huysmans was nominated by

Edmond de Goncourt as a member of the Académie des Goncourt. He died as

a devout Catholic, after a long illness of cancer in the palate on the

13th of May 1907. Before his death he destroyed his unpublished MSS. His

last book was _Les Foules de Lourdes_ (1906).

See Arthur Symons, _Studies in two Literatures_ (1897) and _The

Symbolist Movement in Literature_ (1899); Jean Lionnet in _L'Évolution

des idées_ (1903); Eugène Gilbert in _France et Belgique_ (1905); J.

Sargeret in _Les Grands convertis_ (1906).

HUYSUM, JAN VAN (1682-1749), Dutch painter, was born at Amsterdam in

1682, and died in his native city on the 8th of February 1749. He was

the son of Justus van Huysum, who is said to have been expeditious in

decorating doorways, screens and vases. A picture by this artist is

preserved in the gallery of Brunswick, representing Orpheus and the

Beasts in a wooded landscape, and here we have some explanation of his

son's fondness for landscapes of a conventional and Arcadian kind; for

Jan van Huysum, though skilled as a painter of still life, believed

himself to possess the genius of a landscape painter. Half his pictures

in public galleries are landscapes, views of imaginary lakes and

harbours with impossible ruins and classic edifices, and woods of tall

and motionless trees--the whole very glossy and smooth, and entirely

lifeless. The earliest dated work of this kind is that of 1717, in the

Louvre, a grove with maidens culling flowers near a tomb, ruins of a

portico, and a distant palace on the shores of a lake bounded by

mountains.

It is doubtful whether any artist ever surpassed van Huysum in

representing fruit and flowers. It has been said that his fruit has no

savour and his flowers have no perfume--in other words, that they are

hard and artificial--but this is scarcely true. In substance fruit and

flower are delicate and finished imitations of nature in its more subtle

varieties of matter. The fruit has an incomparable blush of down, the

flowers have a perfect delicacy of tissue. Van Huysum, too, shows

supreme art in relieving flowers of various colours against each other,

and often against a light and transparent background. He is always

bright, sometimes even gaudy. Great taste and much grace and elegance

are apparent in the arrangement of bouquets and fruit in vases adorned

with bas reliefs or in baskets on marble tables. There is exquisite and

faultless finish everywhere. But what van Huysum has not is the breadth,

the bold effectiveness, and the depth of thought of de Heem, from whom

he descends through Abraham Mignon.

Some of the finest of van Huysum's fruit and flower pieces have been

in English private collections: those of 1723 in the earl of

Ellesmere's gallery, others of 1730-1732 in the collections of Hope

and Ashburton. One of the best examples is now in the National Gallery

(1736-1737). No public museum has finer and more numerous specimens

than the Louvre, which boasts of four landscapes and six panels with

still life; then come Berlin and Amsterdam with four fruit and flower

pieces; then St Petersburg, Munich, Hanover, Dresden, the Hague,

Brunswick, Vienna, Carlsruhe and Copenhagen.

HWANG HO [HOANG HO], the second largest river in China. It is known to

foreigners as the Yellow river--a name which is a literal translation of

the Chinese. It rises among the Kuenlun mountains in central Asia, its

head-waters being in close proximity to those of the Yangtsze-Kiang. It

has a total length of about 2400 m. and drains an area of approximately

400,000 sq. m. The main stream has its source in two lakes named

Tsaring-nor and Oring-nor, lying about 35° N., 97° E., and after flowing

with a south-easterly course it bends sharply to the north-west and

north, entering China in the province of Kansuh in lat. 36°. After

passing Lanchow-fu, the capital of this province, the river takes an

immense sweep to the north and north-east, until it encounters the

rugged barrier ranges that here run north and south through the

provinces of Shansi and Chihli. By these ranges it is forced due south

for 500 m., forming the boundary between the provinces of Shansi and

Shensi, until it finds an outlet eastwards at Tung Kwan--a pass which

for centuries has been renowned as the gate of Asia, being indeed the

sole commercial passage between central China and the West. At Tung Kwan

the river is joined by its only considerable affluent in China proper,

the Wei (Wei-ho), which drains the large province of Shensi, and the

combined volume of water continues its way at first east and then

north-east across the great plain to the sea. At low water in the winter

season the discharge is only about 36,000 cub. ft. per second, whereas

during the summer flood it reaches 116,000 ft. or more. The amount of

sediment carried down is very large, though no accurate observations

have been made. In the account of Lord Macartney's embassy, which

crossed the Yellow river in 1792, it was calculated to be 17,520 million

cub. ft. a year, but this is considered very much over the mark. Two

reasons, however, combine to render it probable that the sedimentary

matter is very large in proportion to the volume of water: the first

being the great fall, and the consequently rapid current over two-thirds

of the river's course; the second that the drainage area is nearly all

covered with deposits of loess, which, being very friable, readily gives

way before the rainfall and is washed down in large quantity. The

ubiquity of this loess or yellow earth, as the Chinese call it, has in

fact given its name both to the river which carries it in solution and

to the sea (the Yellow Sea) into which it is discharged. It is

calculated by Dr Guppy (_Journal of China Branch of Royal Asiatic

Society_, vol. xvi.) that the sediment brought down by the three

northern rivers of China, viz., the Yangtsze, the Hwang-ho and the

Peiho, is 24,000 million cub. ft. per annum, and is sufficient to fill

up the whole of the Yellow Sea and the Gulf of Pechili in the space of

about 36,000 years.

Unlike the Yangtsze, the Hwang-ho is of no practical value for

navigation. The silt and sand form banks and bars at the mouth, the

water is too shallow in winter and the current is too strong in

summer, and, further, the bed of the river is continually shifting. It

is this last feature which has earned for the river the name "China's

sorrow." As the silt-laden waters debouch from the rocky bed of the

upper reaches on to the plains, the current slackens, and the coarser

detritus settles on the bottom. By degrees the bed rises, and the

people build embankments to prevent the river from overflowing. As the

bed rises the embankments must be raised too, until the stream is

flowing many feet above the level of the surrounding country. As time

goes on the situation becomes more and more dangerous; finally, a

breach occurs, and the whole river pours over the country, carrying

destruction and ruin with it. If the breach cannot be repaired the

river leaves its old channel entirely and finds a new exit to the sea

along the line of least resistance. Such in brief has been the story

of the river since the dawn of Chinese history. At various times it

has discharged its waters alternately on one side or the other of the

great mass of mountains forming the promontory of Shantung, and by

mouths as far apart from each other as 500 m. At each change it has

worked havoc and disaster by covering the cultivated fields with 2 or

3 ft. of sand and mud.

A great change in the river's course occurred in 1851, when a breach

was made in the north embankment near Kaifengfu in Honan. At this

point the river bed was some 25 ft. above the plain; the water

consequently forsook the old channel entirely and poured over the

level country, finally seizing on the bed of a small river called the

Tsing, and thereby finding an exit to the sea. Since that time the new

channel thus carved out has remained the proper course of the river,

the old or southerly channel being left quite dry. It required some

fifteen or more years to repair damages from this outbreak, and to

confine the stream by new embankments. After that there was for a time

comparative immunity from inundations, but in 1882 fresh outbursts

again began. The most serious of all took place in 1887, when it

appeared probable that there would be again a permanent change in the

river's course. By dint of great exertions, however, the government

succeeded in closing the breach, though not till January 1889, and not

until there had been immense destruction of life and property. The

outbreak on this occasion occurred, as all the more serious outbreaks

have done, in Honan, a few miles west of the city of Kaifengfu. The

stream poured itself over the level and fertile country to the

southwards, sweeping whole villages before it, and converting the

plain into one vast lake. The area affected was not less than 50,000

sq. m. and the loss of life was computed at over one million. Since

1887 there have been a series of smaller outbreaks, mostly at points

lower down and in the neighbourhood of Chinanfu, the capital of

Shantung. These perpetually occurring disasters entail a heavy expense

on the government; and from the mere pecuniary point of view it would

well repay them to call in the best foreign engineering skill

available, an expedient, however, which has not commended itself to

the Chinese authorities. (G. J.)

HWICCE, one of the kingdoms of Anglo-Saxon Britain. Its exact dimensions

are unknown; they probably coincided with those of the old diocese of

Worcester, the early bishops of which bore the title "Episcopus

Hwicciorum." It would therefore include Worcestershire, Gloucestershire

except the Forest of Dean, the southern half of Warwickshire, and the

neighbourhood of Bath. The name Hwicce survives in Wychwood in

Oxfordshire and Whichford in Warwickshire. These districts, or at all

events the southern portion of them, were according to the _Anglo-Saxon

Chronicle_, _s.a._ 577, originally conquered by the West Saxons under

Ceawlin. In later times, however, the kingdom of the Hwicce appears to

have been always subject to Mercian supremacy, and possibly it was

separated from Wessex in the time of Edwin. The first kings of whom we

read were two brothers, Eanhere and Eanfrith, probably contemporaries of

Wulfhere. They were followed by a king named Osric, a contemporary of

Æthelred, and he by a king Oshere. Oshere had three sons who reigned

after him, Æthelheard, Æthelweard and Æthelric. The two last named

appear to have been reigning in the year 706. At the beginning of Offa's

reign we again find the kingdom ruled by three brothers, named Eanberht,

Uhtred and Aldred, the two latter of whom lived until about 780. After

them the title of king seems to have been given up. Their successor

Æthelmund, who was killed in a campaign against Wessex in 802, is

described only as an earl. The district remained in possession of the

rulers of Mercia until the fall of that kingdom. Together with the rest

of English Mercia it submitted to King Alfred about 877-883 under Earl

Æthelred, who possibly himself belonged to the Hwicce. No genealogy or

list of kings has been preserved, and we do not know whether the dynasty

was connected with that of Wessex or Mercia.

See Bede, _Historia eccles._ (edited by C. Plummer) iv. 13 (Oxford,

1896); W. de G. Birch, _Cartularium Saxonicum_, 43, 51, 76, 85, 116,

117, 122, 163, 187, 232, 233, 238 (Oxford, 1885-1889).

(F. G. M. B.)

HYACINTH (Gr. hyakinthos), also called JACINTH (through Ital.

_giacinto_), one of the most popular of spring garden flowers. It was in

cultivation prior to 1597, at which date it is mentioned by Gerard. Rea

in 1665 mentions several single and double varieties as being then in

English gardens, and Justice in 1754 describes upwards of fifty

single-flowered varieties, and nearly one hundred double-flowered ones,

as a selection of the best from the catalogues of two then celebrated

Dutch growers. One of the Dutch sorts, called La Reine de Femmes, a

single white, is said to have produced from thirty-four to thirty-eight

flowers in a spike, and on its first appearance to have sold for 50

guilders a bulb; while one called Overwinnaar, or Conqueror, a double

blue, sold at first for 100 guilders, Gloria Mundi for 500 guilders, and

Koning Saloman for 600 guilders. Several sorts are at that date

mentioned as blooming well in water-glasses. Justice relates that he

himself raised several very valuable double-flowered kinds from seeds,

which many of the sorts he describes are noted for producing freely.

The original of the cultivated hyacinth, _Hyacinthus orientalis_, a

native of Greece and Asia Minor, is by comparison an insignificant

plant, bearing on a spike only a few small, narrow-lobed, washy blue

flowers, resembling in form those of our common blue-bell. So great has

been the improvement effected by the florists, and chiefly by the Dutch,

that the modern hyacinth would scarcely be recognized as the descendant

of the type above referred to, the spikes being long and dense, composed

of a large number of flowers; the spikes produced by strong bulbs not

unfrequently measure 6 to 9 in. in length and from 7 to 9 in. in

circumference, with the flowers closely set on from bottom to top. Of

late years much improvement has been effected in the size of the

individual flowers and the breadth of their recurving lobes, as well as

in securing increased brilliancy and depth of colour.

The peculiarities of the soil and climate of Holland are so very

favourable to their production that Dutch florists have made a specialty

of the growth of those and other bulbous-rooted flowers. Hundreds of

acres are devoted to the growth of hyacinths in the vicinity of Haarlem,

and bring in a revenue of several hundreds of thousands of pounds. Some

notion of the vast number imported into England annually may be formed

from the fact that, for the supply of flowering plants to Covent Garden,

one market grower alone produces from 60,000 to 70,000 in pots under

glass, their blooming period being accelerated by artificial heat, and

extending from Christmas onwards until they bloom naturally in the open

ground.

In the spring flower garden few plants make a more effective display

than the hyacinth. Dotted in clumps in the flower borders, and arranged

in masses of well-contrasted colours In beds in the flower garden, there

are no flowers which impart during their season--March and April--a

gayer tone to the parterre. The bulbs are rarely grown a second time,

either for indoor or outdoor culture, though with care they might be

utilized for the latter purpose; and hence the enormous numbers which

are procured each recurring year from Holland.

The first hyacinths were single-flowered, but towards the close of the

17th century double-flowered ones began to appear, and till a recent

period these bulbs were the most esteemed. At the present time, however,

the single-flowered sorts are in the ascendant, as they produce more

regular and symmetrical spikes of blossom, the flowers being closely set

and more or less horizontal in direction, while most of the double sorts

have the bells distant and dependent, so that the spike is loose and by

comparison ineffective. For pot culture, and for growth in

water-glasses especially, the single-flowered sorts are greatly to be

preferred. Few if any of the original kinds are now in cultivation, a

succession of new and improved varieties having been raised, the demand

for which is regulated in some respects by fashion.

The hyacinth delights in a rich light sandy soil. The Dutch

incorporate freely with their naturally light soil a compost

consisting of one-third coarse sea or river sand, one-third rotten cow

dung without litter and one-third leaf-mould. The soil thus renovated

retains its qualities for six or seven years, but hyacinths are not

planted upon the same place for two years successively, intermediary

crops of narcissus, crocus or tulips being taken. A good compost for

hyacinths is sandy loam, decayed leaf-mould, rotten cow dung and sharp

sand in equal parts, the whole being collected and laid up in a heap

and turned over occasionally. Well-drained beds made up of this soil,

and refreshed with a portion of new compost annually, would grow the

hyacinth to perfection. The best time to plant the bulbs is towards

the end of September and during October; they should be arranged in

rows, 6 to 8 in. asunder, there being four rows in each bed. The bulbs

should be sunk about 4 to 6 in. deep, with a small quantity of clean

sand placed below and around each of them. The beds should be covered

with decayed tan-bark, coco-nut fibre or half-rotten dung litter. As

the flower-stems appear, they are tied to rigid but slender stakes to

preserve them from accident. If the bulbs are at all prized, the stems

should be broken off as soon as the flowering is over, so as not to

exhaust the bulbs; the leaves, however, must be allowed to grow on

till matured, but as soon as they assume a yellow colour, the bulbs

are taken up, the leaves cut off near their base, and the bulbs laid

out in a dry, airy, shady place to ripen, after which they are cleaned

of loose earth and skin, ready for storing. It is the practice in

Holland, about a month after the bloom, or when the tips of the leaves

assume a withered appearance, to take up the bulbs, and to lay them

sideways on the ground, covering them with an inch or two of earth.

About three weeks later they are again taken up and cleaned. In the

store-room they should be kept dry, well-aired and apart from each

other.

Few plants are better adapted than the hyacinth for pot culture as

greenhouse decorative plants; and by the aid of forcing they may be

had in bloom as early as Christmas. They flower fairly well in 5-in.

pots, the stronger bulbs in 6-in. pots. To bloom at Christmas, they

should be potted early in September, in a compost resembling that

already recommended for the open-air beds; and, to keep up a

succession of bloom, others should be potted at intervals of a few

weeks till the middle or end of November. The tops of the bulbs should

be about level with the soil, and if a little sand is put immediately

around them so much the better. The pots should be set in an open

place on a dry hard bed of ashes, and be covered over to a depth of 6

or 8 in. with the same material or with fibre or soil; and when the

roots are well developed, which will take from six to eight weeks,

they may be removed to a frame, and gradually exposed to light, and

then placed in a forcing pit in a heat of from 60 to 70°. When the

flowers are fairly open, they may be removed to the greenhouse or

conservatory.

The hyacinth may be very successfully grown in glasses for ornament in

dwelling-houses. The glasses are filled to the neck with rain or even

tap water, a few lumps of charcoal being dropped into them. The bulbs

are placed in the hollow provided for them, so that their base just

touches the water. This may be done in September or October. They are

then set in a dark cupboard for a few weeks till roots are freely

produced, and then gradually exposed to light. The early-flowering

single white Roman hyacinth, a small-growing pure white variety,

remarkable for its fragrance, is well adapted for forcing, as it can

be had in bloom if required by November. For windows it grows well in

the small glasses commonly used for crocuses; and for decorative

purposes should be planted about five bulbs in a 5-in. pot, or in pans

holding a dozen each. If grown for cut flowers it can be planted

thickly in boxes of any convenient size. It is highly esteemed during

the winter months by florists.

The Spanish hyacinth (_H. amethystinus_) and _H. azureus_ are charming

little bulbs for growing in masses in the rock garden or front of the

flower border. The older botanists included in the genus _Hyacinthus_

species of _Muscari_, _Scilla_ and other genera of bulbous Liliaceae,

and the name of hyacinth is still popularly applied to several other

bulbous plants. Thus _Muscari botryoides_ is the grape hyacinth, 6

in., blue or white, the handsomest; _M. moschatum_, the musk hyacinth,

10 in., has peculiar livid greenish-yellow flowers and a strong musky

odour; _M. comosum_ var. _monstrosum_, the feather hyacinth, bears

sterile flowers broken up into a featherlike mass; _M. racemosum_, the

starch hyacinth, is a native with deep blue plum-scented flowers. The

Cape hyacinth is _Galtonia candicans_, a magnificent border plant, 3-4

ft. high, with large drooping white bell-shaped flowers; the star

hyacinth, _Scilla amoena_; the Peruvian hyacinth or Cuban lily, _S.

peruviana_, a native of the Mediterranean region, to which Linnaeus

gave the species name _peruviana_ on a mistaken assumption of its

origin; the wild hyacinth or blue-bell, known variously as _Endymion

nonscriptum_, _Hyacinthus nonscriptus_ or _Scilla nutans_; the wild

hyacinth of western North America, _Camassia esculenta_. They all

flourish in good garden soil of a gritty nature.

HYACINTH, or JACINTH, in mineralogy, a variety of zircon (q.v.) of

yellowish red colour, used as a gem-stone. The _hyacinthus_ of ancient

writers must have been our sapphire, or blue corundum, while the

hyacinth of modern mineralogists may have been the stone known as

_lyncurium_ ([Greek: lynkourion]). The Hebrew word _leshem_, translated

ligure in the Authorized Version (Ex. xxviii. 19), from the [Greek:

ligyrion] of the Septuagint, appears in the Revised Version as jacinth,

but with a marginal alternative of amber. Both jacinth and amber may be

reddish yellow, but their identification is doubtful. As our jacinth

(zircon) is not known in ancient Egyptian work, Professor Flinders

Petrie has suggested that the _leshem_ may have been a yellow quartz, or

perhaps agate. Some old English writers describe the jacinth as yellow,

whilst others refer to it as a blue stone, and the _hyacinthus_ of some

authorities seems undoubtedly to have been our sapphire. In Rev. xx. 20

the Revised Version retains the word jacinth, but gives sapphire as an

alternative.

Most of the gems known in trade as hyacinth are only garnets--generally

the deep orange-brown hessonite or cinnamon-stone--and many of the

antique engraved stones reputed to be hyacinth are probably garnets. The

difference may be detected optically, since the garnet is singly and the

hyacinth doubly refracting; moreover the specific gravity affords a

simple means of diagnosis, that of garnet being only about 3.7, whilst

hyacinth may have a density as high as 4.7. Again, it was shown many

years ago by Sir A. H. Church that most hyacinths, when examined by the

spectroscope, show a series of dark absorption bands, due perhaps to the

presence of some rare element such as uranium or erbium.

Hyacinth is not a common mineral. It occurs, with other zircons, in the

gem-gravels of Ceylon, and very fine stones have been found as pebbles

at Mudgee in New South Wales. Crystals of zircon, with all the typical

characters of hyacinth, occur at Expailly, Le Puy-en-Velay, in Central

France, but they are not large enough for cutting. The stones which have

been called Compostella hyacinths are simply ferruginous quartz from

Santiago de Compostella in Spain. (F. W. R.*)

HYACINTHUS,[1] in Greek mythology, the youngest son of the Spartan king

Amyclas, who reigned at Amyclae (so Pausanias iii. 1. 3, iii. 19. 5; and

Apollodorus i. 3. 3, iii. 10. 3). Other stories make him son of Oebalus,

of Eurotas, or of Pierus and the nymph Clio (see Hyginus, _Fabulae_,

271; Lucian, _De saltatione_, 45, and _Dial. deor._ 14). According to

the general story, which is probably late and composite, his great

beauty attracted the love of Apollo, who killed him accidentally when

teaching him to throw the _discus_ (quoit); others say that Zephyrus (or

Boreas) out of jealousy deflected the quoit so that it hit Hyacinthus on

the head and killed him. According to the representation on the tomb at

Amyclae (Pausanias, _loc. cit._) Hyacinthus was translated into heaven

with his virgin sister Polyboea. Out of his blood there grew the flower

known as the hyacinth, the petals of which were marked with the mournful

exclamation AI, AI, "alas" (cf. "that sanguine flower inscribed with

woe"). This Greek hyacinth cannot have been the flower which now bears

the name: it has been identified with a species of iris and with the

larkspur (_Delphinium Aiacis_), which appear to have the markings

described. The Greek hyacinth was also said to have sprung from the

blood of Ajax. Evidently the Greek authorities confused both the flowers

and the traditions.

The death of Hyacinthus was celebrated at Amyclae by the second most

important of Spartan festivals, the Hyacinthia, which took place in the

Spartan month Hecatombeus. What month this was is not certain. Arguing

from Xenophon (_Hell._ iv. 5) we get May; assuming that the Spartan

Hecatombeus is the Attic Hecatombaion, we get July; or again it may be

the Attic Scirophorion, June. At all events the Hyacinthia was an early

summer festival. It lasted three days, and the rites gradually passed

from mourning for Hyacinthus to rejoicings in the majesty of Apollo,

the god of light and warmth, and giver of the ripe fruits of the earth

(see a passage from Polycrates, _Laconica_, quoted by Athenaeus 139 d;

criticized by L. R. Farnell, _Cults of the Greek States_, iv. 266

foll.). This festival is clearly connected with vegetation, and marks

the passage from the youthful verdure of spring to the dry heat of

summer and the ripening of the corn.

The precise relation which Apollo bears to Hyacinthus is obscure. The

fact that at Tarentum a Hyacinthus tomb is ascribed by Polybius to

Apollo Hyacinthus (not Hyacinthius) has led some to think that the

personalities are one, and that the hero is merely an emanation from the

god; confirmation is sought in the Apolline appellation [Greek:

tetracheir], alleged by Hesychius to have been used in Laconia, and

assumed to describe a composite figure of Apollo-Hyacinthus. Against

this theory is the essential difference between the two figures.

Hyacinthus is a chthonian vegetation god whose worshippers are afflicted

and sorrowful; Apollo, though interested in vegetation, is never

regarded as inhabiting the lower world, his death is not celebrated in

any ritual, his worship is joyous and triumphant, and finally the

Amyclean Apollo is specifically the god of war and song. Moreover,

Pausanias describes the monument at Amyclae as consisting of a rude

figure of Apollo standing on an altar-shaped base which formed the tomb

of Hyacinthus. Into the latter offerings were put for the hero before

gifts were made to the god.

On the whole it is probable that Hyacinthus belongs originally to the

pre-Dorian period, and that his story was appropriated and woven into

their own Apollo myth by the conquering Dorians. Possibly he may be the

apotheosis of a pre-Dorian king of Amyclae. J. G. Frazer further

suggests that he may have been regarded as spending the winter months in

the underworld and returning to earth in the spring when the "hyacinth"

blooms. In this case his festival represents perhaps both the Dorian

conquest of Amyclae and the death of spring before the ardent heat of

the summer sun, typified as usual by the _discus_ (quoit) with which

Apollo is said to have slain him. With the growth of the hyacinth from

his blood should be compared the oriental stories of violets springing

from the blood of Attis, and roses and anemones from that of Adonis. As

a youthful vegetation god, Hyacinthus may be compared with Linus and

Scephrus, both of whom are connected with Apollo Agyieus.

See L. R. Farnell, _Cults of the Greek States_, vol. iv. (1907), pp.

125 foll., 264 foll.; J. G. Frazer, _Adonis, Attis, Osiris_ (1906),

bk. ii. ch. 7; S. Wide, _Lakonische Kulte_, p. 290; E. Rhode,

_Psyche_, 3rd ed. i. 137 foll.; Roscher, _Lexikon d. griech. u. röm.

Myth._, s.v. "Hyakinthos" (Greve); L. Preller, _Griechische Mythol._

4th ed. i. 248 foll. (J. M. M.)

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