Abundance, growth, and food of young game fish of Clear Lake, Iowa, 1949 to 1957. Richard L. Ridenhour, 1

Drying and maturity of grain sorghum as affected by water loss from plant parts. Ivan Wikner and R.E. Atkins. 25

Nucleotide-dependent carbon dioxide fixation in Rhodospirillum rubrum. D.S. Bates and C.H. Werkman. 41

Heritability percentages and degrees of dominance for quantitative characters in oats. K.R. Jones and K.J. Frey. 13

The effect of plastic mulch on the micro-climate and plant development. Leo J. Fitschen and R.H. Shaw. 59

Carbon dioxide fixation by the genus Mycobacterium. T. Myoda and C.H. Werkman. 73

Evidence for tricarboxylic acid cycle in Brevibacterium leucinophagum. R.W. Kinney and C.H. Werkman, 89

List of Masters' Theses, 1959-60. 97

List of Doctoral Dissertations, 1959-60. 105