CACHE 272 CADE from its mouth. The river is navigable to this point for small vessels. The principal trade is silk and rice. Bul- lion, silk, and lacquered work are the exports. It is an open port since 1873, when it passed into the hands of the French. In 1902 it became the capital of French Indo-China. It is the seat of the University of Indo-China, courts, etc. Pop. about 150,000. CACHE, a hole in the ground for hid- ing and preserving provisions which it is inconvenient to carry. CACHE, the name of (1) a peak of the Rocky Mountains in Idaho, height 10,451 feet; (2) a fertile valley in the Wahsatch Mountains in Utah and Ida- ho. It is 60 miles long and lO to 20 miles wide, and has an altitude of 5,000 feet. It is watered by the Bear river and has several villages, of which Lo- gan is the largest; <3) a river in Ar- kansas, flowing N. W. about 150 miles into the White river near Clarendon, in Monroe county. CACHET, LETTRE DE (ka-sha'), a name given especially to letters pro- ceeding from and signed by the kings of France, and countersigned by a sec- retary of state. They were at first made use of occasionally as a means of delaying the course of justice, but they appear to have been rarely employed before the 17th century as warrant for the detention of private citizens, and for depriving them of their personal liberty. During the reign of Louis XIV. their use became frightfully com- mon, and by means of them persons were imprisoned for life or for a long period on the most frivolous pretexts. They were abolished at the Revolution. CACTUS, an old and extensive genus of Linnaeus, in four sections: (1) The echinomelocacts; (2 and 3) cerei of two kinds; and (4) opuntise. It is now broken up into a number of genera. It is still popularly used as the designation of nearly the whole of the Cactacea, to which order, moreover, it has given its name. Cacti are sometimes called melon thistles. Hedgehog cactus; a designation of the genus Echinocactus. Leaf cactus; the Epiphyllum. Melon thistle cactus; the Melocactus. Nipple cactus; the Mammillaria. The Hindus compare Europeans in the East to the species of cactus (opun- tia dillevM) , which they know best. The plant, though now seen all over India, undoubtedly came at first from a for- eign and a distant country. It grows very extensively in the western and southwestern part of the United States and all over tropical America, usually on arid lands. Once rooted in a place, it spreads so widely abroad that it is CACTI diflficult to get it out again, and it is believed to impoverish the land of which it takes possession. It is of so abnormal a type that none but itself can be its parallel. An unpleasant feature about it is that, from whatever side you ap- proach it, you are met in all directions by fixed bayonets. CADE, JACK, the leader of a popular insurrection in the reign of Henry VI. of England. He was a native of Ire- land, but, claiming kindred with the royal house of York, and assuming the name of John Mortimer, he collected 20,000 followers, chiefly Kentish men, who, in June, 1450, flocked to his stand-
