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Idaho Carotenoid Pigment Production and Nutritional Require- 



ments of Certain Gram Negative Bacteria Isolated From Soil and 

 Water . Study: (1) Carotenoid pigments of Flavobacterium species 

 by qualitative and quantitative procedures, and investigate 

 influence of cultural conditions on pigment formation; (2) 

 and define nutritional needs of certain soil and water bacteria 

 used in investigations of pigmentation; (3) learn suitability 

 of carotenoid pigmentation to serve as a property useful in 

 arranging species of Flavobacterium and related pigmented, Gram 

 negative plant pathogenic and soil bacteria. 

 Bact. 341 



111. A Study of Various Factors Affecting the Thermal Resistance 

 of Bacterial Endospores . To evaluate and determine conditions 

 which affect the thermal resistance of bacterial endospores with 

 particular emphasis on endospores produced by bacteria of 

 importance in spoilage of thermally produced foods. 

 Food Tech. 50-376 



111. Research on Antibiotics . To investigate antibiotics and 

 their relationship to agricultural problems. 

 PI. Path. 68-375 



Ind. Determination of the Role of Soil Microorganisms in the 



Soil Aeration Requirements of Plants . To learn (1) effect of 

 microorganisms upon aeration needs of plant roots; (2) effect 

 of aeration upon nature and abundance of microbial flora associated 

 with plant roots. 



Bot., PI. Path. 843 



Iowa Function of Carbon Dioxide in Bacterial Metabolism . To 



determine (1) purpose and mechanism of assimilation of carbon 

 dioxide by bacteria; (2) relationship of heterotrophic assimilation 

 of carbon dioxide to autotrophic assimilation by chemosynthetic 

 and photosynethetic bacteria; and (3) vitamins growth factors, 

 or coenzymes involved in carbon dioxide assimilation. 

 Bact. 746 



La. The Effect of Chemicals Used in Agriculture on the Soil 



Microflora. To determine effects of herbicides, pesticides, 

 defoliants, etc., upon the microorganisms present in the soils 

 of Louisiana. 



PI. Path., Bot. 837 (S-22) 



Mass. Bacteriological Study of Sewage Disposal Plants . To study 



the efficiency of various types of sewage treatment plants using 

 fecal streptococci as indicator organisms. 

 Bact. 14 



