PLATE XXXIX. 



OSTEOPOROSIS 



Showincj Disease and Descent of the .Sesamoid Bones 



IRACIUHE UF THE SESAMOID BONES 



Border Lass, aged, l>roke down (fractured the sesamoid bones of botli fore-legs) at 

 Ringmer l^teeplechase, April lo. 1889. Hliotograph taken seven weeks later 



