FOOD REQUIREMENTS 509 



1939. La Pyrimidine et le thiazol, facteurs de croissance pour le flagelle 



a chlorophylle, Euglena piscijoniiis. C. R. Soc. Biol. Paris, 130: 419-22. 



Elliott, A. M. 1933.* Isolation of Colpldiuni striatum Stokes in bacteria-free 

 culture and the relation of growth to pH of the medium. Biol. Bull., 

 65:45-56. 



1935a. Eifects of carbohydrates on growth of Colpidiuiu. Arch. 



Protistenk., 84: 156-74. 



1935b.* Effects of certain organic acids and protein derivatives on the 



growth of Colpidium. Arch. Protistenk., 84: 225-31. 



1935c. The influence of pantothenic acid on growth of Protozoa. Biol. 



Bull., 68: 82-92. 



1937a. Vitamin Bj and growth of Protozoa. Anat. Rec, 70 (Suppl.) : 



127. 



1937b. Plant hormones and growth of Euglena in relation to light. 



Anat. Rec, 70 (Suppl.): 128. 



1938.* The influence of certain plant hormones on growth of Protozoa. 



Physiol. Zo5l., 11: 31-39. 



1939. The vitamin B complex and the growth of Colp'id'iiim striatum. 



Physiol. Zo5l., 12: 363-373. 



Gause, G. F. 1935. Experimentelle Untersuchungen liber die Konkurrenz 



zwischen "Paramecium caudatum und Paramecium aurelia. Arch. 



Protistenk., 84: 207-24. 

 Geise, A. C, and C. V. Taylor. 1935. Paramecia for experimental purposes 



in controlled mass cultures on a single strain of bacteria. Arch. Protistenk., 



84: 225-31. 

 Glaser, R. W., and N. A. Coria. 1930. Methods for the pure culture of certain 



Protozoa. J. exp. Med., 51: 787-806. 



1933. The culture of Paramecium caudatum free from living micro- 

 organisms. J. Parasite., 20: 33-37. 



1935a. The culture and reactions of purified Protozoa. Amer. J. Hyg., 



21: 111-20. 



1935b. Purification and culture of Tritrichomonas joetus (Riedmiiller) 



from cows. Amer. J. Hyg., 22: 221-26. 



Hall, R. P. 1933a. On the relation of hydrogen-ion concentration to the growth 

 of Euglena anabaena var. minor and E. deses. Arch. Protistenk., 79: 

 239-48. 



1933b. Growth of Colpidium campylum with reference to oxygen re- 

 lationships. Anat. Rec, 57 (Suppl.): 95. 



1934. Eff'ects of carbohydrates on growth of Euglena anabaena var. 



?ninor in darkness. Arch. Protistenk., 82: 45-50. 



1937a.* "Growth of free-living Protozoa in pure cultures." In Culture 



Methods for Invertebrate Animals. Ithaca. Pp. 51-59. 



1937b. Certain culture reactions of several species of Euglenidae. Trans. 



Amer. micr. Soc, 56: 285-87. 



