Fauna Arctica, by Schaudinn and ROmer, have already appeared.
On his return from the Far North, Schaudinn at once began what is to us the most interesting of all his work—the study of the pathogenic protozoa—by a research, in collaboration with Siedlicki, on the life-history of Coccidia. In the article on Protozoa in AUbutt and Rolleston's System of Medicine, Professor Minchin has given an admirably lucid account of this investigation, and of the development of Coccidium schubergi. The report of this investigation is of peculiar interest to us, not only on account of the extraordinary resemblance of the reproductive cycle of the coccidian to that of the malarial parasite, but also from the fact that it was traced by Schaudinn in the intestinal epithelium of a centipede about the same time that the evolution of the Plasmodium was being followed by Ross in the mosquito. It may be noted, too, that it was at this time that Schaudinn first made use of the terms Schizogony and Sporogony. For his work on the Coccidia, Schaudinn was awarded the Tiedemann prize by the Natural History Society of Frankfurt, and was immediately thereafter called to the Imperial Office of Health in Berlin. Here he was appointed Director of the proposed Institute of Protozoology, for which he drew up a scheme of work, and, in consultation with the architect, suggested plans for the building. Pending the completion of the Institute, Schaudinn, who was now happily married, applied to be transferred to the charge of the Zoological Station at Rovignoon the Adriatic, where he hoped to be able to realise his ambition to repeat the observations that had been made on the tropical protozoan parasites. To his great joy his application was entertained, and he arrived at Rovigno in April, 1901. His first work there was a continuation of his Coccidian observations, this time as parasitic in a warm-blooded animal. He traced the development of Cyclospora caryo-
