=CACTUS.=--The Cacti are for the most part natives of South America, where their weird and grotesque columns or stems, devoid of leaves, dot with green the arid plains of New Barcelona or the dark hillsides of Mexico and California. They often attain the height of fifty feet, and live to such an age as to have gained the name of “imperishable statues.” Standing for centuries, they have been selected to mark national boundaries, as for instance, between the English and French possessions in the Island of St. Christopher, West Indies, and they are also employed as hedges to lanes and roadways. In the arid plains of Mexico and Brazil, the Cacti serve as reservoirs of moisture, and not only the natives, by probing the fleshy stems with their long forest knives, supply themselves with a cool and refreshing juice, but even the parched cattle contrive to break through the skin with their hoofs, and then to suck the liquid they contain. The splendid colours of the Cactus flowers are in vivid contrast with the ugly and ungainly stems.----There are sundry local legends and superstitions about these plants of the desert. A certain one poisons every white spot on a horse, but not one of any other colour. Another, eaten by horses, makes them lazy and imbecile.----The number of known genera is eighteen, and there are six hundred species, two of which are specially cultivated, viz., _Opuntia Cochinellifera_ (Nopal plant), largely grown in Mexico, as the food plant of the Cochineal insect (_Coccus Cacti_), which produces a beautiful crimson dye; and _C. vulgaris_, or Prickly Pear, which is cultivated for its grateful Gooseberry-like fruits in barren rocky parts of North Africa and Southern Europe.----Peruvian sorcerers make rag dolls, and stick the thorns of Cactus in them, or hide these thorns in holes under or about houses, or in the wool of beds and cushions, that those they wish to harm may be crippled, maddened, or suffocated. CALF’S-SNOUT.--See Antirrhinum. =CAMELLIA.=--The flower of the beauteous Rose of Japan (_Camellia Japonica_) has been well described as-- “The chaste Camellia’s pure and spotless bloom, That boasts no fragrance and conceals no Thorn.”