This is the latest of the series of works on the pathology of the eye by Mr. Parsons. On the whole it is even a better example of original work, patient compilation and practical application of laboratory study than his previous contributions to the same subject. Seven chapters treat of "Injuries of the Eye," "Exophthalmos and Enophthalmos." "Panophthalmitis, Orbital Cellulitis and Thrombosis," "Sympathetic Ophthalmia," "Symptomatic Diseases of the Eye" and "Heredity."
One of the most satisfactory chapters is that on "Migratory Ophthalmia." After a careful analysis of all the theories of its pathogenesis, Parsons is of the opinion that bacterial transmission by metastasis, first mentioned by Mackenzie and elaborated by Berlin, is worthy of acceptance. He believes that most of the facts point, to sympathetic ophthalmia as a disease of bacterial origin, and "if the virulence of the organisms and the varying conditions of resistance of the tissues are taken