[Illustration: _Copyright by B.F. McMann_ FIG. 7. Dr. Henry Van Dyke, United States Minister to Holland, Author, Scholar, and Poet. A good example of physically frail type, with slight tendency to bone and muscle. Refined, intellectual, sensitive, responsive, optimistic, but well-balanced, poised, and keenly discriminating. Dr. Van Dyke shows his tendency to physical activity in his love for the out-of-doors. Note large development of upper portion of head; slight squareness of jaw; height of head above temples, especially in center; fine texture; excellent balance of features, and calm, poised, thoughtful, but kindly expression.] [Illustration: _Photo by American Press Association_. FIG. 8. Dr. Beverly T. Galloway, Assistant Secretary of Agriculture. Physically frail, but mentally very active. Said to be one of the greatest living authorities on plant culture. Slight squareness of build indicates tendency to interest in out-of-door matters, which, on account of large development of mental qualities, he expresses in an intellectual way.] NATURAL APTITUDE The fifth criterion is natural aptitude. Everyone has observed that some people are naturally commercial. We have seen a boy take a penny to school, buy a slate pencil or a lead pencil with that penny, and trade that for an old pocket knife, the knife for something else, and keep on swapping until he had a gun, a set of chess, a bag of marbles, and several other important boys' acquisitions, all from that one penny. Another boy takes penny after penny to school and he never has anything to show for it You know such boys--and grown people, too. Every individual has some such aptitudes--either latent or developed, either mediocre or marked--and his aptitudes fit him better for some one vocation than for any other. EXPERIENCE