rorpoise

3791

Port

At present the term, when used alone, is in j manufactories of aerated waters, farm imple-
strict usage restricted to a group of acid and I ments, pumps; p. 6,574,
sub-acid rocks, containing phenocrysts of or- i Portalis, Jean Etienne Marie (1746-
th oclase feldspar. Granite porphyries are pink | 1807), French jurist, was born in Beausset,

near Toulon. He incurred the animosity of
Robespierre during the French Revolution and
was arrested in 1793, but was released on the
fall of his enemy, and became president of the
Council of Ancients. In iSoo he was employed
by Napoleon to assist in drafting the famous
Code Civil.

Portal System, the four large veins, the
superior and inferior mesenteric, the gastric,
and the splenic, which unite to form the portal
vein, carrying venous blood from the viscera
concerned in digestion to the liver.

Port Angeles, city, Washington, county
seat of Clallam co., situated on the Strait of
Juan de Fuca. It has a good harbor, is engaged
in the lumber industry, and has several cream-
eries. In the vicinity are two lakes affording
splendid trout fishing; p. 9,409.

Port Antonio, seaport town, situated on
the north coast of Jamaica, British West
Indies; the second commercial city of the
island and the center of the fruit trade; p.

,074.

Port Arthur, city and port of entry, Thun-
der Bay district, Ontario, Canada, situated on
an arm of Lake Superior. The city has steam-
er connection with Duluth, Minn., and with
Owen Sound on Lake Huron, and is one of the
chief commercial points on the northwest
shore of Lake Superior. It is the seat of ex-
tensive lumbering and mining interests, has
numerous grain elevators, and manufactures
tents, awnings, and bricks; p. 16,134.

Port Arthur (Chinese Lu-shun-kau), nav-
al and commercial port, situated at the south-
eastern extremity of the Liao-tung peninsula,
Manchukuo. It is situated on the northern
and eastern sides of a bay of the Yellow Sea
and is surrounded by rocky hills. The harbor
entrance, which is ice-free, is about 380 yds.
broad. Port Arthur was taken by the Japanese
in 1894 during the Chinese-Japanese War, but,
upon the intervention of Russia, France, and
Germany, was returned to China. In 1898 it
was leased by China to the Russians, who
fortified it and made it their chief naval base
in the Far East and the terminus of the
Siberian Railway. It was attacked by the
Japanese at the outbreak of the Russo-Jap-
anese War, and capitulated after a prolonged
siege. The treaty of Portsmouth (1905)
awarded it to Japan for the remainder of the
period of the Russian lease, and in 1915 the
lease was extended to 99 years; p. 14,000,

or gray rocks, with pale feldspars, dark plates
of mica, and gray or colorless blebs of quartz
in a micro-crystalline or felsitic quartzo-felds-
pathic or granophyric ground-mass. Quartz-
porphyries usually show rounded quartzes in a
fine, stony matrix.

Porpoise, a name applied by sailors indis-
criminately to any of the smaller toothed
whales, but which should be restricted to the
members of the genus Phocsena, of which P.
communis, the common porpoise, is abundant
in all northern oceans. It reaches a length of
about five ft., and has a rounded muzzle, not
prolonged into a beak, as in the dolphin. The
upper surface is almost black, and the under,
which is constantly shown as the porpoise rolls
in the water, is pure white. The two tints
gradually fade into each other.

Porsena, Lars, in ancient Roman legend,
king of Clusium in Etruria, who soon after the
expulsion of the kings of Rome in 509 B.C.
tried to restore Tarquin. He took the fortress
on the hill Janiculum, on the right bank of the
Tiber, and would have crossed into Rome by
the pile-bridge but for the bravery of Horatius
Codes. See Macaulay's Lays of Ancient Rome.

Portage, city, Wis., county seat of Colum-
bia co., on the Wisconsin R. and the govern-
ment ship canal between the Fox and Wiscon-
sin Rs. Steamboats run regularly to and from
Green Bay. It is the center of a region fertile
in grain and tobacco, with mineral deposits of
iron, copper, and marl. The chief manufac-
tures are pickles, bricks, hosiery, underwear,
flour, shoes, sashes, and blinds. There are iron
works and grain elevators. The vicinity was
one of the first localities explored by Father
Marquette and was the scene of the Black
Hawk War. The historic Fort Winnebago is
just outside the city limits; p. 7,016.

Portage Lake, a lake in Houghton co.,
Mich. Its s. part is connected with Keweenaw
Bay by a narrow channel called Portage
Entry. It is nearly 20 m. long and a or 3 m.
wide, and is navigable by large vessels. A ship-
canal nearly 2% m. long and 100 ft. wide con-
nects its n. end with Lake Superior, enabling
steamboats on the latter to pass through a
route /shorter than around Keweenaw Point.

Portage la Prairie, tn,, Manitoba, Cana-
da, co. seat of Portage la Prairie co., is the
market of a fertile farming region and has
flour mills, brickyards, grain-elevators, and