988 PROTOZOA AND OTHER ANIMALS 



Bechdel, S. I., H. E. Soneywell, R A. Dutcher, and M. H. Knutsen. 1928. 



Synthesis of vitamin B in the rumen of the cow. J. biol. Chem., 80: 



231-38. 

 Becker, E. R. 1929. Methods of rendering the rumen and reticulum of 



ruminants free from their normal infusorian fauna. Proc. nat. Acad. Sci. 



Wash., 15: 435-38. 



1932. The present status of problems relating to the ciliates of 



ruminants and Equidae. Quart. Rev. Biol., 7: 282-97. 



1933. Host-specificity and specificity of animal parasites. Amer. J. trop. 



Med., 13: 505-23. 



Becker, E. R., and R. C. Everett. 1930. Comparative growths of normal 

 and Infusoria-free lambs. Amer. J. Hyg. 11: 362-70. 



Becker, E. R., and T. S. Hsiung. 1929. The method by which ruminants 

 acquire their fauna of Infusoria, and remarks concerning experiments 

 on the host-specificity of these Protozoa. Proc. nat. Acad. Sci. Wash., 

 15: 684-90. 



Becker, E. R., J. A. Schulz, and M. A. Emmerson. 1930. Experiments on the 

 physiological relationships between the stomach Infusoria of ruminants 

 and their hosts, with a bibliography. Iowa St. Coll. J. Sci., 4: 215-51. 



Becker, E. R., and M. Talbott. 1927. The protozoan fauna of the rumen and 

 reticulum of American cattle. Iowa St. Coll. J. Sci., 1: 345-71. 



Beckwith, T. D., and E. J. Rose. 1929. Cellulose digestion by organisms from 

 the termite gut. Proc. Soc. exp. Biol. N.Y., 27: 4-6. 



Beers, C. D. 1938a. Structure and division in the astomatous ciliate Aleta- 

 radiophrya asjtmnetrica n. sp. J. Elisha Mitchell sci. Soc, 54: 111-25. 



1938b. Hysterocineta eiseniae n. sp., an endoparasitic ciliate from the 



earthworm Eisenia lonnhergi. Arch. Protistenk., 91: 516-25. 



Beneden, P. J. van. 1876. Animal parasites and messmates. New York. Also 



German and French editions. 

 Berghe, L. van den. 1934. Sur un ciliate parasite de pontes de mollusques 



d'eau douce Glaucoma paedophthora, n. sp. C. R. Soc. Biol. Paris, 115: 



1423-26. 

 Bishop, A. 1926. Notes upon SieboldieU'/na planariaruDi (Siebold), a ciliate 



parasite of PLvmria torva. Parasitology, 18: 187-94. 



1932. Entamoeba aulastomi Noller. Cultivation, morphology, and 



method of division; and cultivation of Hexamita sp. Parasitology, 24: 

 225-32. 



1933. The morphology and division of Hexaj/uta gigas n. sp. (Flagel- 



lata). Parasitology, 25: 163-70. 



— ■ — • 1935. Observations upon a "Trichomonas" from pond water. Para- 

 sitology, 27: 246-56. 



1936. Further observations upon a "Trichomonas" from pond water. 



Parasitology, 28: 443-45. 



