1892.] Recent Htm 



present in various portions of the en 

 account of the accidental syntheses th 

 „ those resulting during the burning i 

 produced by action of the moisture of 



the 'rational syntheses ' that have heei: 

 all the minerals formed by dry fusion, 

 tion of a ' mineralizer,' describes the \ 



The Worms of Bronn's Thier-Reichs.— This volume wa* 

 commenced by A. Pagenstecher who wrote ''Licferungen 1-ti" and 

 was then obliged to give up further work on account of ill-health. 

 Prof. Max Braun 8 ofKonigsburg (i, Pr.), Germany ha- uini< -i taken 

 the task of completing the treatise and up to date has issued Lief. 7-16. 



Lief. 1-7 are given up to a hi-; - I p.), while 



the remainder of the work which has thus far appeared is occupied 

 with a discus-ion of th< nogeuea. 



The system thus far adopted is : 



Mionelminthes: I. Rhornbozoa, 1. ord. Heterocyemida (genera 

 Conocyema, Microcyema), 2. ord. Dicyemida (genera Dicyema, Dicye- 

 menned). II. Orthonectida (g. Rhopalura). Trichoplax. 



Plathelminthes : I. Trematodes, 1. Monogenea ; families: Tem- 

 nocephalea;, 1 genus; Tristomese, 3 sub-families with 14 genera; Poly- 

 stomese, 4 sub-families with 18 genera. (It will be noticed that 

 Braun does not use the ending idea determined upon by the Inter- 

 national Congress as the ending of the family name). 



The work is well written, finely illustrated and contains a very full 

 bibliography with short reviews of every paper. This book will be the 

 most complete treatise in existence on the group Vermes, and is indis- 

 pensible to those who wish to work in that subject. The Reviewer urges 

 all Americans who publish on the group, to aid Prof. Braun in the 

 rest of his work by forwarding to him reprints of all the papers they 

 his line. 



The monograph costs 1 mark 50 pro Lieferung, and is published by 

 C. P. Winter, Leipzig and Heidelberg.— C. W. Stiles. 



"Braun's Klassen und Ordnungen des Thier-Reichs : Bd. iv. Vermes. 



