The cherry is the fruit of a small tree or shrub belonging to the genus Prunus. The fruit is smooth and bloomless, enclosing a small, smooth seed. There are many varieties of the cherry, both of the wild and the tame. The sour cherry contains about nine per cent, of sugar, but this is almost entirely disguised by the acid which it contains. The sweet cherry contains about eleven per cent. of sugar. An eminent physician once cured a patient who had chronic diarrhea, by a diet of ripe cherries. This treatment was continued for several weeks.