NEWS N< >TES 



I)r. T. 1). A. Cockerell, professor of zoology at the Univer- 

 sity of Colorado for the last twenty-eight years and a frequent 

 contributor to Torreya, retired from the University this sum- 

 mer with the title of professor emeritus. 



At the Berkley meeting of the American Association for the 

 Advancement of Science last June Dr. O. L. Sponsler, of the 

 University of California, was elected president and Dr. Flora 

 Murray Scott, also of U. of C, secretary-treasurer of the Pacific 

 Section of the Botanical Society of America. 



At the commencement exercises at Colgate University in 

 June the degree of doctor of science was conferred on Dr. Wil- 

 liam F. Langworthy, who retired from the chair of botany at 

 the university. (Science) 



Dr. M. F. Barrus, professor of plant pathology at Cornell 

 University, sailed for Porto Rico on June 28. He has been given 

 two years' leave of absence to take charge of the reorganization 

 of agricultural extension at the Insular Experiment Station, 

 Rio Piedras. Dr. P. P. Pirone, formerly in charge of Dutch elm 

 disease eradication in Nassau County, Long Island, has been 

 appointed acting extension assistant professor of plant pathol- 

 ogy during the absence of Dr. Barrus. (Science) 



Dr. Karl Frederic Kellerman, bacteriologist and executive 

 of the U. S. Department of Agriculture, died on August 30, in 

 Washington. Dr. Kellerman came to the Federal Department 

 of Agriculture as an associated physiologist in the Bureau of 

 Plant Industry in 1901. His work in connection with the physi- 

 ology of lower plants, especially those of importance with rela- 

 tion to potable water supplies, and his studies in nitrifying bac- 

 teria for which he developed a synthetic medium that is the 

 foundation of all successful work in this field since that time, 

 led to his rapid advancement, and in 1914 he was appointed 

 assistant chief of the Bureau of Plant Industry. 



In the reorganization of the Department in 1933 Dr. Keller- 

 man took general charge of all the regulatory work associated 



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