206 PHYSIOLOGY OF THE FUNGI 



Pii.GRiM, F. J., A. E. AxELROD, T. WiNNicK, and K. Hofmann: The microbiological 



activity of an oxygen analog of biotin, Science 102 : 35-36, 1945. 

 Pratt, E. F., and R. J. Williams: The effects of pantothenic acid on respiratory 



activity. Jour. Gen, Physiol. 22 : 637-647, 1939. 

 RoBBiNS, W. J., and F. Kavanagh: Thiamin and growth of Pythium butleri, Bull. 



Torrey Botan. Club 65: 453-461, 1938. 

 RoBBiNS, W. J., and F. Kavanagh: Thiazole effect on Phycomyces, Proc. Natl. 



Acad. Sci. U.S. 27: 423-427, 1941. 

 ♦RoBBiNS, W. J., and V. Kavanagh: Vitamin deficiencies of the filamentous fungi, 



Botan Rev. 8: 411-471, 1942. 

 RoBBiNS, W. J., and R. Ma: Pimelic acid, biotin and certain fungi, Science 96: 



406-407, 1942. 

 *RoBBiNS, W. J., and R. Ma: Vitamin deficiencies of Ceratostomella and related fungi, 



Am. Jour. Botany 29: 835-843, 1942a. 

 RoBBiNS, W. J., and R. Ma: Vitamin deficiencies of Ceratostomella, Bull. Torrey 



Botan. Club 69: 184-203, 19426. 

 RoBBiNS, W. J., and R. Ma: A Rhodotorula deficient for para-aminobenzoic acid, 



Science 100 : 85-86, 1944. 

 RoBBiNS, W. J., J. E. MacKinnon, and R. Ma: Vitamin deficiencies of Trichophyton 



discoides, Bull. Torrey Botan. Club 69: 509-521, 1942. 

 RoGOSA, M.: Nicotinic acid requirements of certain yeasts, Jour. Bact. 46: 435-440, 



1943. 

 Rosenberg, H. R. : Chemistry and Physiology of the Vitamins, Interscience Pub- 

 lishers, Inc., New York, 1942. 

 Rubin, S. H., D. Flowers, F. Rosen, and L. Drekter: The biological activity of 



0-heterobiotin, Arch. Biochem. 8: 79-90, 1945. 

 RuBBO, S. D., and J. M. Gillespie: Para-aminobenzoic acid as a bacterial growth 



factor, Nature 146 : 838-839, 1940. 

 Ryan, F. J., R. Ballentine, E. Stolong, M. E. Corson, and L. K. Schneider: 



The biosynthesis of pantothenic acid, Jour. Am. Chein. Soc. 67 : 1857-1858, 1945. 

 ScHOPFER, W. H.: Ueber die Wirkung von reinen kristallisierten Vitaminen auf 



Phycomyces, Ber. d. deut. botan. Ges. 52: 308-311, 1934. 

 ScHOPFER, W. H.: Recherches sur le metabolisme de I'azote d"un microorganisme 



acellulaire (Phycomyces blakesleeanus Bgf.). Le role des facteurs de croissance, 



Protoplasma 28: 381-434, 1937. 

 *ScHOPFER, W. H.: Plants and Vitamins, Chronica Botanica Co., Waltham, 1943. 

 ScHOPFER, W. H., and M. Guilloud: Recherches experimentales sur les facteurs de 



croissance et le pourvoir de synthese de Rhizopus cohnii Berl. et de Toni (Rhizo- 



pus suinus Neilson), Zeit. fur Vitaminforsch. 16: 181-296, 1945. 

 Snell, E. E. : Effect of heat sterilization on growth-promoting activity of pyridoxine 



for Streptococcus lactis R., Proc. Soc. Exptl. Biol. Med. 51: 356-358, 1942. 

 Snell, E. E.: The vitamin activities of "pyridoxal" and "pyridoxamine," Jour. 



Biol. Chem. 154: 313-314, 1944. 

 Snell, E. E., and B. M. Guirard: Some interrelationships of pyridoxine, alanine 



and glycine in their effect on certain lactic acid bacteria, Proc. Natl. Acad. Sci. 



U.S. 29: 66-73, 1943. 

 Snell, E. E., B. M. Guirard, and R. J. Williams: Occurrence in natural products 



of a physiologically active metabolite of pyridoxine, Jour. Biol. Chem. 143 : 



519-530, 1942. 

 Snell, E. E., and A. N. Rannefelt: The vitamin Be group. III. The vitamin 



activity of pyridoxal and pyridoxamine for various organisms, Jour. Biol. Chem. 



157 : 475-489, 1945. 



