Competition and synergism between cholesterol and cholestanol in oospore formation in Phytophthora cactorum.

Fimbriation, Pellicle Formation and the Amount of Growth of Salmonellas in Broth. By Inhibition of Excystment of Schizopyrenus russelli Cysts in the Presence of Emetine and its Cysticidal Effect in Conjunction with Sodium Lauryl Sulphate. By S. A. IMAM, G. P. DUTTA and S. C. AGARWALA . . . . . . . . . . . . . Diversity of Surface Layers in L-forms of Proteus mirabilis. By P. H. HOFSCHNEIDER and H. H. MARTIN . . . . . . . . . . . . . . Distinction between Bacterial and Algal Utilization of Soluble Substances in the Sea. By A. L. S. MUNRO and T. D. BROCK Use of Inhibitors for Selective Isolation and Enumeration of Cytophagas from Natural Substrates. By G. M. WARKE and S. A. DHALA Heritable Glycogen-storage Deficiency in Yeast and its Induction by Ultra-violet Light. By V. E. CHESTER . . . . . . . . . . . . . . Regulation of Synthesis of Glutamine Synthetase in Escherichiu coli. By C. Wu and L. H. YUAN Production of Extracellular Enzymes by Phytophthora palmivora (Butl.) Butl. By 0. A. AKINREFON . . . . . . . . . . . . . . . Streptomycin Resistance and Morphological Variation in Phyfophthora cactorum. By D. S . SHAW and C. G. ELLIOTT Competence in Bacillus sirbtilis Transformation System. By S. HORVATH . . . . The Development of Radiation-resistant Cultures of Escherichia coli I by a Process of The Recombination of Bromouracil-containing Deoxyribonucleic Acid in Salmonella typhiStudies on the Nature of the Killer Factor Produced by Saccharomyces cerevisiae. By D. R. Chlorophyll Formation in Euglena gracilis var. bacillaris : Interference by Vitamin Analogues. . . . . . . . . . . . Competition and Synergism between Cholesterol and Cholestanol in Oospore Formation The Chemical Composition of the Cell Walls of Penicilliutn digitatuni Sacc. and Penicillium . . . . Delineation. of Nocardia furcinica by Delayed Type Skin Reactions on Guinea Pigs. By D. C. OLD, I. CORNEIL, L. F. GIBSON, A. D. THOMSON and J. P. DUGUID . . .