from the microbiological source and vitamin B,, are identical. We wish to thank Dr. Charles Rosenblum for the determination of refractive indices and spectrographic analyses, and Mr. Frederick Bacher for the solubility measurements. We are indebted to Miss Muriel Caswell and her colleagues for the microbiological assays and to Dr. W. 11. Ott for the determination of "animal protein factor" activity. We are indebted to Dr. 11. B. Woodruff, Mr. David Hendiin, and Miss Myrle Ruger for collaboration on the extension of the research on the microbiological production of vitamin B,,. EDWARDL. RICKES, NORIVIAN R. G. BRINK, FRANK tremendous interest i n chemical weed-control methods a t this time, the above information is pertinent and warrants careful consideration by all concerned with crop production. JACKSON B. HESTERand ROBERT L. ISAAC'S, JR. Department of Agricultural Research, Campbell Soup Company, Rivcrton, New Jersey
G. K. Stookey合作论文数3S Kelly合作论文数2George Eckert合作论文数Department of Biostatistics and Health Data Science, Indiana University School of Medicine2B Beiswanger合作论文数1AGF Zandona合作论文数1Gk Stookey合作论文数1M Ando合作论文数1M Analoui合作论文数1J Brunelle合作论文数1Eggertsson H合作论文数1Edward J Brizendine合作论文数1Abdel H Kafrawy合作论文数1George J Eckert合作论文数1J. B. HESTER合作论文数1
