Annals of medical history . Fig. 11. Spondylitis in the lumbar vertebra ofan ancient Egyptian. About 5,000 years old. (AfterRuffer.) Fig. 12. Spondylitis deformans in a recent humanvertebra. Natural size. These four figures show the characteristic lesions of this osteoarthritis at different periods of the historyof animals and man. So far as external appearances go there has been no change in the pathological pro-cesses producing these lesions since the Pleistocene at least. Similar lesions of greater antiquity have notyet been seen. 386 Annals of Medical History is, from the geological standp


Annals of medical history . Fig. 11. Spondylitis in the lumbar vertebra ofan ancient Egyptian. About 5,000 years old. (AfterRuffer.) Fig. 12. Spondylitis deformans in a recent humanvertebra. Natural size. These four figures show the characteristic lesions of this osteoarthritis at different periods of the historyof animals and man. So far as external appearances go there has been no change in the pathological pro-cesses producing these lesions since the Pleistocene at least. Similar lesions of greater antiquity have notyet been seen. 386 Annals of Medical History is, from the geological standpoint, of rela-tively recent origin and has afflicted theinhabitants of the earth for only the lastone-quarter of the earths history—thatis, for the last 25,000,000 out of a possible


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Keywords: ., bookauthorp, bookcentury1900, bookdecade1910, booksubjectmedicine