593.19 III 



616.962 



IV. 



Sporozoa.' 



THE volume by Dr. von Wasielewski, recently published, is an 

 extremely good and complete account of the Sporozoa, with 

 especial reference to those which are permanent cell-parasites and, 

 like Hamamceba Laverani, the parasite of malarial fever, are associated 

 with disease. 



A very curious and striking fact is that, although the Germans, 

 KoUiker, Hammerschmidt, and Lieberkuhn, forty years ago were the 

 chief workers who had added to our knowledge of the genus Gregarina, 

 established by the French entomologist Dufour, yet, with the excep- 

 tion of the pioneer work of Eimer, the newer knowledge of the 

 Sporozoa is almost entirely due to French, Itahan, and English 

 observers. So that we have here, in Dr. von Wasielewski's book, a 

 very unusual circumstance, namely, a German zoological treatise 

 which is mainly occupied in making known and accessible to German 

 readers the original work of French zoologists and micrographers. 



In the history of research on the Sporozoa — the name given by 

 Leuckart to Gregarinae and the allied forms— we find, following after 

 the fundamentally important memoir of Theodor Eimer on the Coccidia 

 of mice and rabbits and their spore-formation, the "Le9ons sur les 

 Sporozoaires " of Balbiani, pubHshed in 18S4 ; the numerous short 

 papers of Aimee Schneider in his Tablettes Zoologiques, from 1881 to 

 1892 ; the admirable systematic treatise of Labbe " Parasites Endo- 

 globulaires," published about two years ago in the Archives de Zoologie 

 experimentale ; the researches of Thelohan on the Myxosporidia, 

 published last year in the Bulletin Scientifique de la France et de la Bel- 

 giqtie, and of Gurley on the same subject in the Bulletin of the U.S. 

 Fish Commission ; the memoir of Leger on the true Gregarinae, in the 

 Tablettes Zoologiques, 1892 ; and the original treatises of Danilewsky, 

 Laveran, and Grassi, on the Haematozoa. All this and other material 

 is freely drawn upon and reproduced in systematic form in the present 

 volume ; well executed and abundant figures are copied from original 

 sources, and the whole subject is carefully treated, both with reference 

 to description of particular groups and species, and as to classification 

 and systematic nomenclature. 



An idea of the range of the work may best be formed by the 

 following outline of the classification and enumeration of genera : 



1 Sporozoenkunde : ein Leitfaden fur Aerzte, Tierarzte und Zoologen. Von 

 Dr. von Wasielewski. Pp. viii., 162, with iii figures in the text. Jena: Gustav 

 Fischer, 1896. Price 4 marks. 



