Now men, for as long as we have any knowledge of their thoughts and classifications and attitudes, have been accustomed to first think of one another, to classify and size one another as tall or short, slender or broad, thin or corpulent. The biological necessity, indeed, instinct of the one animal to relate the other animal to aggressive or harmless agencies in his surroundings, accounts for this. Relatively, of course, for all these modes of description imply offensive or defensive possibilities of the stimulus for the recorder in relation to himself. The interest in stature is fundamental, and has persisted in the most civilized, nations. The relationship of height and weight, as well as of length and breadth, to other physical traits, have formed the subject of scientific study. There is, for instance, the classification of Bean, who divided mankind generally into two types, those of a medium size, stocky long legs and arms, large hands and feet, short trunk, and face large in comparison to the head (the meso-onto-morphs) and those who were either tall and slender, or small and delicate, with the smaller face, eyes close together, long, high, narrow nose, and trunk longer as compared with the extremities (the hyper-onto-morphs). Bean showed, too, that the hypers (to use a short word to contrast with the mesos) were present to the extent of almost a hundred per cent in a series of tuberculosis, and about ninety per cent in a series of central nervous system disease. All of which is exceedingly interesting and suggestive, but throws no light upon the underlying mechanisms of statures. STATURE AND GROWTH Stature is essentially determined by the growth of the long bones. They are the pace-makers, and the muscles and soft tissues follow the pace they set. Now the primary determinant, catalyst or sensitizer of the growth of the long bones is the anterior pituitary. All statures should therefore be first scrutinized from the point of view of the pituitary. Individuals over six feet tall or under five feet five inches should be looked upon as having a pituitary trend. This pituitary trend may be primary, due to its own undergrowth or overgrowth, or it may be due to lack of inhibition from the sex glands such as occurs in eunuchs and eunuchoids, or excessive or premature inhibition from them as happens in certain salacious dwarfs.