The Black Mountain is chiefly notable for four British expeditions:--

1. Under Lieut.-Colonel F. Mackeson, in 1852-53, against the Hassanzais.

The occasion was the murder of two British customs officers. A force of

3800 British troops traversed their country, destroying their villages

and grain, &c.

2. Under Major-General A.T. Wilde, in 1868. The occasion was an attack

on a British police post at Oghi in the Agror Valley by all three

tribes. A force of 12,500 British troops entered the country and the

tribes made submission.

3. The First Hazara Expedition in 1888. The cause was the constant raids

made by the tribes on villages in British territory, culminating in an

attack on a small British detachment, in which two English officers were

killed. A force of 12,500 British troops traversed the country of the

tribes, and severely punished them. Punishment was also inflicted on the

Hindostani Fanatics of Palosi.

4. The Second Hazara Expedition of 1891. The Black Mountain tribes fired

on a force within British limits. A force of 7300 British troops

traversed the country. The tribesmen made their submission and entered

into an agreement with government to preserve the peace of the border.

The Black Mountain tribes took no part in the general frontier rising of

1897, and after the disappearance of the Hindostani Fanatics they sank

into comparative unimportance.

BLACKPOOL, a municipal and county borough and seaside resort in the

Blackpool parliamentary division of Lancashire, England, 46 m. N. of

Liverpool, served by the Lancashire & Yorkshire, and London & North

Western railways. Pop. (1891) 23,846; (1901) 47,346. The town, which is

quite modern, contains many churches and chapels of all denominations, a

town hall, public libraries, the Victoria hospital, three piers,

theatres, ball-rooms, and other places of public amusement, including a

lofty tower, resembling the Eiffel Tower of Paris. The municipality

maintains an electric tram service. There are handsome promenades along

the sea front, which command fine views. Extensive works upon these,

affording a sea front unsurpassed by that of any English watering-place,

were completed in 1905. The beach is sandy and the bathing good. The

borough was created in 1876 (county borough, 1904), and is governed by a

mayor, 12 aldermen and 36 councillors. Area, exclusive of foreshore,

3496 acres; including foreshore, 4244 acres.

BLACK ROD (more fully, "Gentleman Usher of the Black Rod "), an official

of the House of Lords, instituted in 1350. His appointment is by royal

letters patent, and his title is due to his staff of office, an ebony

stick surmounted with a gold lion. He is a personal attendant of the

sovereign in the Upper House, and is also usher of the order of the

Garter, being doorkeeper at the meetings of the knights' chapter. He is

responsible for the maintenance of order in the House of Lords, and on

him falls the duty of arresting any peer guilty of breach of privilege

or other offence of which the House takes cognizance. But the duty which

brings him most into prominence is that of summoning the Commons and

their speaker to the Upper House to hear a speech from the throne or the

royal assent given to bills. If the sovereign is present in parliament,

Black Rod _commands_ the attendance of the gentlemen of the Commons, but

when lords commissioners represent the king, he only _desires_ such

attendance. Black Rod is on such occasions the central figure of a

curious ceremony of much historic significance. As soon as the

attendants of the House of Commons are aware of his approach, they close

the doors in his face. Black Rod then strikes three times with his

staff, and on being asked "Who is there?" replies "Black Rod." Being

then admitted he advances to the bar of the House, makes three

obeisances and says, "Mr Speaker, the king commands this honourable

House to attend his majesty immediately in the House of Lords." This

formality originated in the famous attempt of Charles I. to arrest the

five members, Hampden, Pym, Holies, Hesilrige and Strode, in 1642.

Indignant at this breach of privilege, the House of Commons has ever

since maintained its right of freedom of speech and uninterrupted debate

by the closing of the doors on the king's representative.

BLACK SEA (or EUXINE; anc. _Pontus Euxinus_),[1] a body of water lying

almost entirely between the latitudes 41 deg. and 45 deg. N., but

extending to about 47 deg. N. near Odessa. It is bounded N. by the

southern coast of Russia; W. by Rumania, Turkey and Bulgaria; S. and E.

by Asia Minor. The northern boundary is broken at Kertch by a strait

entering into the Sea of Azov, and at the junction of the western and

southern boundary is the Bosporus, which unites the Black Sea with the

Mediterranean through the Sea of Marmora and the Dardanelles. The

100-fathom line is about 10 to 20 m. from the shore except in the

north-west corner between Varna and Sevastopol, where it extends 140 m.

seawards. The greatest depth is 1030 fathoms (1227 Russian fathoms) near

the centre, there being only one basin. The steepest incline outside 100

fathoms is to the south-east of the Crimea and at Amastra; the incline

to the greater depths is also steep off the Caucasus and between

Trebizond and Batum. The conditions that prevail in the Black Sea are

very different from those of the Mediterranean or any other sea. The

existence of sulphuretted hydrogen in great quantities below 100

fathoms, the extensive chemical precipitation of calcium carbonate, the

stagnant nature of its deep waters, and the absence of deep-sea life are

conditions which make it impossible to discuss it along with the

physical and biological conditions of the Mediterranean proper.

The depths of the Black Sea are lifeless, higher organic life not being

known to exist below 100 fathoms. Fossiliferous remains of _Dreissena_,

_Cardium_ and other molluscs have, however, been dredged up, which help

to show that conditions formerly existed in the Black Sea similar to

those that exist at the present day in the Caspian Sea. According to N.

Andrusov, when the union of the Black Sea with the Mediterranean through

the Bosporus took place, salt water rushed into it along the bottom of

the Bosporus and killed the fauna of the less saline waters. This gave

rise to a production of sulphuretted hydrogen which is found in the

deposits, as well as in the deeper waters.

Observations in temperature and salinity have only been taken during

summer. During summer the surface salinity of the Black Sea is from 1.70

to 2.00% down to 50 fathoms, whereas in the greater depths it attains a

salinity of 2.25%. The temperature is rather remarkable, there being an

intermediate cold layer between 25 and 50 fathoms. This is due to the

sinking of the cold surface water (which in winter reaches

freezing-point) on to the top of the denser more saline water of the

greater depths. There is thus a minimum circulation in the greater

depths causing there uniformity of temperature, an absence of the

circulation of oxygen by other means than diffusion, and a protection of

the sulphuretted hydrogen from the oxidation which takes place in

homologous situations in the open ocean. The temperature down to 25

fathoms is from 78.3 deg. to 46.2 deg. F., and in the cold layer,

between 25 and 50 fathoms, is from 46.2 deg. to 43.5 deg. F., rising

again in greater depths to 48.2 deg. F.

The _Sea of Marmora_ may be looked upon as an arm of the Aegean Sea and

thus part of the Mediterranean proper. Its salinity is comparable to

that of the eastern basin of the Mediterranean, which is greater than

that of the Black Sea, viz. 4%. Similar currents exist in the Bosporus

to those of the Strait of Gibraltar. Water of less salinity flows

outwards from the Black Sea as an upper current, and water of greater

salinity from the Sea of Marmora flows into the Black Sea as an

under-current. This under-current flows towards Cape Tarhangut, where it

divides into a left and right branch. The left branch is appreciably

noticed near Odessa and the north-west corner; the right branch sweeps

past the Crimea, strikes the Caucasian shore (where it comes to the

surface running across, but not into, the south-east corner of the Black

Sea), and finally disperses flowing westwards along the northern coast

of Asia Minor between Cape Jason and Sinope. This current causes a

warmer climate where it strikes. So marked is this current that it has

to be taken into account in the navigation of the Black Sea.

The _Sea of Azov_ is exceedingly shallow, being only about 6 fathoms in

its deepest part, and it is largely influenced by the river Don. Its

water is considerably fresher than the Black Sea, varying from 1.55 to

0.68%. It freezes more readily and is not affected by the Mediterranean

current.

See N. Andrusov, "Physical Exploration of the Black Sea," in

_Geographical Journal_, vol. i. p. 49.

Encyclopaedia Britannica, 11th Edition, "Bisharin" to "Bohea" Volume 4, Slice 1 · 第 10 / 38 题