American Journal of Physical Anthropology

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: carefully noted and recorded. Upon the observations so far carried out the evidence is wholly negative. This is in accordance with the conclusion of Hunter (4) that there is no real difference in the region of the symphysis pubis between the pelvis of the parturient and that of the non-pregnant woman. It...
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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: carefully noted and recorded. Upon the observations so far carried out the evidence is wholly negative. This is in accordance with the conclusion of Hunter (4) that there is no real difference in the region of the symphysis pubis between the pelvis of the parturient and that of the non-pregnant woman. It is also in harmony with Aeby's view that no increase occurs in the actual distance between the pubic bones during pregnancy but that there is a softening and consequent extensibility in the ligaments themselves. No author except Aeby has so far claimed the consequent occurrence of any bone change. I do not believe that pregnancy and child-birth leave any permanent stamp upon the skeleton. After the seventh phase there is no question of a sexual difference; the age-relationships of the phases do not differ in the female from those in the male. With the exception of the differences afore stated in the third and fourth decades we cannot admit any sexual factor in the age relationship of bone changes in the pubis. Such differences as occur between the ages of twenty and forty years will probably receive further confirmation for they are supported by the collateral evidence of sex differences in the ventral aspect of the os pubis and the lipping of tendinous and ligamentous attachments. Aeby's statement and the elaborate theory which he built up in consequence are directly contradicted by our material. IV. Age Changes In The Pubic Bone Of The Negro-white Hybrid Female INTRODUCTION The acquisition of female Colored bodies is very difficult in Cleveland so that we possess only twenty-two pelves in the series of known age and even among these one or two may eventually have to be discarded. To use so small a number as an independent unit in this investigation would be of course...