The most common cause of disease in birds proceeds from a superabundance of food, which brings on repletion. In this case the intestines descend to the extremities of the body, and appear through the skin, while the feathers on the part affected fall off, and the poor bird, after a few days, pines and dies. If the disease is not too far gone, putting them in separate cages, and confining them to the cooling diet of water and lettuce-seed, may save the lives of many: they are also subject to epilepsy, asthma, ulcers in the throat, and to extinction of the voice. The cure for the first is doubtful; it is said that if a drop of blood fall from the bill, the bird will recover life and sense; but if touched prior to falling of itself, it will occasion death. If they recover from the first attack, they frequently live for many years without any alteration in their note. Another cure is to inflict a slight wound in the foot. Asthma is cured by plantain, and hard biscuit soaked in white wine; while ulcers, like repletion, must be cured by cooling food. For extinction of voice, the cure ought to be hard yolk of eggs, chopped up with crumbs of bread, and for drink a little liquorice-root, or a blade of saffron in water. In addition to these evils, the canary is infested by a small insect, if they are kept dirty. To avoid this, they should have plenty of water to bathe in, in a new cage, covered with new cloth, and their seeds well sifted and washed. These attentions, if troublesome, are nevertheless necessary to possess a thriving bird. When wild, it has already been remarked, that all birds require water, and to a canary this is so necessary, that if a saucer or cup of snow be put into the cage they will flutter against it with the utmost delight, even during the most severe winters. They are bred in immense numbers, both for amusement and commerce, in France, Tyrol, Germany, and in this country: those from Germany are in the least esteem, from their living only one or two years in this country, although the cock of this variety is an approved songster.—_Montagu._ CANCER, _s._ A crabfish; a virulent swelling; a sore.