Annals of medical history . Man, Amer. Geol., mm, vol. xwiii. |>|). 5>-t-- K- ? Studies in Paleopathology 39i the specimen later, suggested that it mighthave been a fracture with callus andnecrosis. 8. Fistula are evident in the lower jawof an ancient and primitive whalefrom the Eocene ofEgypt, and an en-largement of themandible of athree-toed horsefrom the Mioceneof North Americaindicates the pres-ence of a fistula,possibly due toactinomycosis, i nits early fistulse areoccasionally seenamong the knownremains of fossilman, often result-ing in the loss ofteeth. 9. Rickets is
Annals of medical history . Man, Amer. Geol., mm, vol. xwiii. |>|). 5>-t-- K- ? Studies in Paleopathology 39i the specimen later, suggested that it mighthave been a fracture with callus andnecrosis. 8. Fistula are evident in the lower jawof an ancient and primitive whalefrom the Eocene ofEgypt, and an en-largement of themandible of athree-toed horsefrom the Mioceneof North Americaindicates the pres-ence of a fistula,possibly due toactinomycosis, i nits early fistulse areoccasionally seenamong the knownremains of fossilman, often result-ing in the loss ofteeth. 9. Rickets is in-dicated, accordingto Abel, among theapes which arefound mummifiedin the old Egyptiangraves. 10. Necroses,due possibly to avariety of causes,and attributed bycertain Frenchwriters to tuber-culosis, are fairlycommon amongfossil marked necrosisof the ilium of a large dinosaur, accompanied by expansionand thickening of the bone, is evidentin the mounted skeleton of Campto-saurus on exhibition at the National. Fig. 18. The arm bones of a mosasaur from the Cretaceouof Kansas, showing lesions resembling osteoperiostitis. TheIage bone is the humerus, the other probably a rough surface of the bone indicates its well-preserved specimens of these bones are quitesmooth. The lesions have an arthritic nature also, thoughthey are not confined to the articular surfaces, x J^. The specimens are the property of the University ofKansas Museum of Natural History. Museum in Washington. A mosasaur bonefrom the Cretaceous of Kansas and certaincrocodile limb bones from the Jurassic ofEngland show lesions of a necrotic assignment ofany of the lesionsto a definite causeis manifestly im-possible, and whiletuberculosis hasbeen suggested asa possible cause,the diagnosis is souncertain as to benearly the crocodileskeleton, abovereferred to, thereis abundant evi-dence that the in-fection, the focusof which was inthe pelvis, wascarried by m
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