Contents xiii 



PAGE 



Phylum VII. Nemathelminthes 

 Class Nematoda 

 Recovering Infective Nematode Larvae from Cultures . . .166 

 By G. F. White, U. S. Bureau of Entomology and Plant Quarantine 



Rearing Trichinella spiralis ^8 



By Reed O. Christenson, University of Minnesota 



The Growth of Hookworm Larvae on Pure Cultures of Bac- 

 teria (Reprinted) l 7° 



By Oliver R. McCoy, School of Hygiene and Public Health 



Culturing Eggs of the Fowl Nematode, Ascaridia lineata . . . 171 



By J. E. Ackert, Kansas State College 

 The Life History of the Swine Kidney Worm (Abstracted) . .172 



By Benjamin Schwartz, U. S. Bureau of Animal Industry 



Cultivation of a Parasitic Nematode 17 2 



By William Trager, Rockefeller Institute for Medical Research 



Culturing Parasitic Nematode Larvae from Silphids and Re- 

 lated Insects l 73 



By C. G. Dobrovolny, University of Michigan 



Anguilla aceti (Abstracted) 173 



By George Zebrowski, Buck Creek, Indiana 



Artificial Cultivation of Free-Living Nematodes . . . . 174 

 By Asa C. Chandler, Rice Institute 



Phylum VIII. Trochelminthes 

 Class Rotatoria 



A Culture Medium for Hydatina senta 176 



By Josephine C. Ferris, University of Nebraska 



Class Gastrotricha 



Method of Cultivation for Gastrotricha 176 



By Charles Earl Packard, University of Maine 



Phylum IX. Bryozoa 

 Class Ectoprocta 



Bugula flabellata and B. turrita 178 



By Benjamin H. Grave, De Pauw University 



