Alopecu′rus, a genus of grasses. See Foxtail-grass.

Alo′ra, a town of Southern Spain, province of Malaga. Pop. 6200.

Alost, or Aalst (ä′lost, älst), a town of Belgium, 15 miles W.N.W. of Brussels, on the Dender (here navigable), with a beautiful, though unfinished, church, and an ancient town hall (thirteenth century); manufactures of lace, thread, linen and cotton goods, &c., and a considerable trade. In the market-place stands a statue of Thierry Maartens, who introduced the art of typography into the Netherlands in 1473. The town was occupied by the Germans in 1914. Pop. 35,603.

Alpac′a, a ruminant mammal of the camel tribe, and genus Auchēnia (A. Paco), a native of the Andes, especially of the mountains of Chile and Peru, and closely allied to the llama. Llamas

and alpacas are mutually fertile when crossed, and this explains the existence of intermediate forms between the two breeds. It has been domesticated, and remains also in a wild state. In form and size it approaches the sheep, but has a longer neck. It is valued chiefly for its long, soft, and silky wool, which is straighter than that of the sheep, and very strong, and is woven into fabrics of great beauty, used for shawls, clothing for warm climates, coat-linings, and umbrellas, and known by the same name. Cloth made from imported alpaca wool is manufactured in England, principally in Yorkshire. Attempts have been made to introduce and acclimatize the alpaca in Europe and in Australia, but no measure of success has attended the experiments. Its flesh is pleasant and wholesome.

Alpe′na, a town of the United States, Michigan, at the entrance of the Thunder into Lake Huron, with saw-mills, woollen factories, &c. Pop. 12,706.

Alpen-horn, or Alp-horn (Ger.), a long, nearly-straight horn, curving slightly, and widening towards its extremity, used in the Alps to convey signals, or notice of something.

Alpen-stock (Ger.), a strong, tall stick shod with iron, pointed at the end so as to take hold in, and give support on, ice and other dangerous places in climbing the Alps and other high mountains.

Alpes (a˙lp), the name of three departments in the south-east of France, all more or less covered by the Alps or their offshoots:—Basses-Alpes (bäs-a˙lp; Lower Alps) has mountains rising to a height of 8000 to 10,000 feet, is drained by the Durance and its tributaries, and is the most thinly-peopled department in France; area, 2697 sq. miles; capital, Digne. Pop. (1921), 91,882.—Hautes-Alpes (ōt-a˙lp; Upper Alps), mostly formed out of ancient Dauphiné, traversed by the Cottian and Dauphiné Alps (highest summits 12,000 feet), drained chiefly by the Durance and its tributaries. It is the lowest department in France in point of absolute population; area, 2178 sq. miles; capital, Gap. Pop. (1921), 89,275.—Alpes-Maritimes (a˙lp-ma˙-ri-tēm; Maritime Alps) has the Mediterranean on the south, and mainly consists of the territory of Nice, ceded to France by Italy in 1860. The greater part of the surface is covered by the Maritime Alps; the principal river is the Var. It produces in the south, cereals, vines, olives, oranges, citrons, and other fruits; and there are manufactories of perfumes, liqueurs, soap, &c., and valuable fisheries. It is a favourite resort for invalids; area, 1443 sq. miles; capital, Nice. Pop. 357,759.