Tell me now what Will has done. Who's to whip him, dear? Is he some scamp full of fun That is straying near? Have you caught him at your nest By the ones you love the best? "Whip-poor-Will! Whip-poor-Will!" That is all you seem to say, Little bird so shy. Tell me now, without delay, Why whip Will, oh! why? There! your voice fades in the lea-- Leaving this command to me, "Whip-poor-Will! Whip-poor-Will!" --_Monroe H. Rosenfeld._ [Illustration: COPYRIGHT 1899, NATURE STUDY PUB. CO., CHICAGO. CHIMPANZEE. 1/6 Life-size. FROM COL. CHI. ACAD. SCIENCES.] TONGUES. W. E. WATT. The tongue is said to be the stomach begun. It is the first organ of the digestive system which acts upon the food. It is the source of much of the pleasure of life, particularly to young people. As it stands at the entrance to the alimentary canal it is endowed with powers of detecting the qualities of whatever the hands present to the stomach. In early life the system demands abundant supplies of good material to build up growth and maintain activity. The sense of taste is then peculiarly keen, and the appetite for good things is strong. After maturity the desires become less and one has not so much pleasure in eating unless by active labor or from some other cause the digestive organs are kept in a robust condition. With the years the tastes change. We wonder how children can possibly eat such quantities in such combination. The food which fairly delighted us long ago has little or no attraction for us, and with many adults there is need for strong seasoning and condiments which children avoid. The child clamors for sweets. The adult is inclined to check the child in eating that which would not digest in the adult's stomach. But Herbert Spencer won the hearty esteem of the youngster when he gave scientific argument showing that growing children need highly concentrated foods to meet the demands of nature, and they may be permitted, in fact encouraged, to eat freely of foods which are unsuited to mature people. The tongue's special work is telling us whether a given substance is good for us. Like other senses it may be deceived and is not always to be relied upon. And when it has told us once correctly we may make a serious mistake in following its advice too extensively so as to learn that too much of a good thing is not all good.