. Adolescence : its psychology and its relations to physiology, anthropology, sociology, sex, crime, religion and education . onlycomplexion. Certain it is that the sex organs, the nipples,and aureola become distinctly darker. In mixed races, espe-cially in mulattoes, testimony would indicate frequent modi-fications both ways. As to whether the lachrymal glands share the general aug-mentation of the secretory function, we find no evidence saveonly the repeated statement that weeping is more frequentin girls for a few years after the dawn of puberty than before. The following is Puechs table sh
. Adolescence : its psychology and its relations to physiology, anthropology, sociology, sex, crime, religion and education . onlycomplexion. Certain it is that the sex organs, the nipples,and aureola become distinctly darker. In mixed races, espe-cially in mulattoes, testimony would indicate frequent modi-fications both ways. As to whether the lachrymal glands share the general aug-mentation of the secretory function, we find no evidence saveonly the repeated statement that weeping is more frequentin girls for a few years after the dawn of puberty than before. The following is Puechs table showing the averagedimensions of the ovaries at different ages: Right. Left. Length. Height. Thickness. Length. Height. Thickness. 6-11 yrs 13-15 ••••19-35 •••• 915 18 2425 35 4-5 I3-I Miihlmann, from a few determinations, gives their weightas follows: Age. Weight of both Ovaries. Abs. Rel. 3 2 0 18 70 He has also weighed the testes at different ages, with thefollowing results: 122 THE PSYCHOLOGY OF ADOLESCENCE Weight of Some think that in contrast with the ovaries, which afterthe climacteric are reduced greatly, the testes continue to they do not share the general post-climacteric involu-tion which comes later in men is not yet sufficiently estab-lished. On the other hand, two secretory organs rapidly declinein size, one relatively and the other absolutely, during ado-lescence. The mysterious thymus gland, which is large atbirth, is reduced one-half and sometimes to a vestige beforepuberty, and often vanishes between twenty-five and thirty-five. It has, however, no known connection with this age saveperhaps through its relation with the thyroid gland higher upin the lower part of the neck. The latter has lately come to beof great and growing interest, through its relation with theblood and nutrition, which are known to be very important,although not yet well understoo
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