_The symptoms_ of worms are--emaciation; itching and picking of the nose; a dark mark under the eyes; grating, during sleep, of the teeth; starting in the sleep; foul breath; furred tongue; uncertain appetite--sometimes voracious, at other times bad, the little patient sitting down very hungry to his dinner, and before scarcely tasting a mouthful, the appetite vanishing; large bowels; colicky pains of the bowels; slimy motions; itching of the fundament. Tape-worm and round-worm, more especially the former, are apt, in children, to produce convulsions. Tape-worm is very weakening to the constitution, and usually causes great emaciation and general ill-health; the sooner, therefore, it is expelled from the bowels the better it will be for the patient. Many of the obscure diseases of children arise from worms. In all doubtful cases, therefore, this fact should be borne in mind, in order that a thorough investigation may be instituted. With regard to _treatment_, a medical man ought, of course, to be consulted. He will soon use means both to dislodge them, and to prevent a future recurrence of them. Let me caution a mother never to give her child patent medicines for the destruction of worms. There is one favourite quack powder, which is composed principally of large doses of calomel, and which is quite as likely to destroy the patient as the worms! No, if your child have worms, put him under the care of a judicious medical man, who will soon expel them, without, at the same tune, injuring health or constitution! 274. _How may worms be prevented from infesting a child's bowels_?