Show DUE TO BODILY DISORDERS scientist thus thu explains the striking differences between various races race of mankind assuming that the various existing races of mankind are arc descended from a common stock how bow are arc to bo be ex nel such striking differences as these that distinguish for example tho the chinaman from the anglo saxon and the anglo angio saxon saon from the negro prof arthur keith recently discussed this question in nn an address before the anthropological section of the british association lie ile believes that the key to this problem Is to be found through studying the disturbances and disorders that occasionally casio nally affect tile the development and growth of the human body especially those due to tl a functional derama ment ot of one or more of the glands of inter oal DOI secretion the pituitary thyroid pineal adrenal and other glands in dome manter manner not dot yet understood the functions carried on in their glands regulate not only the dimen dimensions siona of the body but also the shape and size ot of each individual part the racial features of the mongolian type are imitated by growing europeans who are arc affected by deficiency disorders of the thyroid gland the features of the negro can bet best be accounted tor for by the nature ot of the growth regulating centered in the thyroid and suprarenal glands european features are connected with a dominance in the functions or the pituitary scientists hope that a thorough study of the still obscure subject of the so BO called ductless glands gland will provide the means of regulating to some extent the future evolution of the human buman race |