GENERAL INDEX 



See also Index of Microorganisms, page 331 



Acridine, 164, 230 

 Acriflavine, 196 

 Actinomyces lysozyme, 270 

 Actinomycetes, 102-103 



antagonistic properties of, 1 04-1 14 

 as antagonists, 102-123 



against actinomycetes, I 20-1 2 1 

 against agents producing plant dis- 

 eases, I 21-122 

 against bacteria, 106, 108, 1 1 1- 



113, 120 

 against fungi, 54, 11 3-1 14, 139, 

 141-142 

 in soil, 6, 8, 9, 109-1 12 

 substances produced by, 54, 11 4-1 21, 

 171-175 

 in vivo activity of, 122-123 

 Actinomycetin, 1 07-1 08, 114, 1 20, 

 263, 270 

 chemical and biological properties, 



157, 160, 161, 171 

 effect on bacteria, 108 

 effect on cells, 120, 199 

 therapeutic value, 123 

 toxicity, 161 

 Actinomycin, 114-115, 270 

 antiluminescent activity, 77 

 chemical nature, 53, 157, 1 71-173 

 compared with chemical substances, 



70 

 compared with penicillin, streptothri- 



cin, and clavacin, 1 90-1 91 

 compared with proactinomycin, i 20 

 compared with tyrothricin, 206 

 crystals. Fig. 18 (p. 1 70) 

 differentiation of bacteria by, 220 

 effect on bacteria. Fig. 5 (p. 59), 77, 

 171, 206-207, 209-210, 211 

 by species, 70, 115, 191 

 effect on cells, 195 

 effect on fungi, 78, 141 

 pffect on soil bacteria, 21, 22 

 in vivo activity, 122 

 medium, 1 16 



Actinomycin {cont.) 



neutralizing agent, 219 

 toxicity, 190, 206, 245 

 Actinomycin A, 67, 160. See also Ac- 

 tinomycin 

 Actinomycin B, 67, 160, 171 

 Actinomycosis, 28, 225 

 Adaptive enzymes, 166 

 Aerobic bacteria as antagonists, 99— lOO 

 Agar diffusion method of measuring 



antibiotic activity, 73-75 

 Agar method for testing antagonistic ac- 

 tion, 64 

 Agar plate-dilution method of measur- 

 ing antibiotic activity, 69, 71 

 Alfalfa, decomposition by microorgan- 

 isms, 44-45 

 Alfalfa-sick soils, 1 8 

 Algae, 6, 9, 54 

 Amebae, 9, 23, 146 

 Anaerobic bacteria, 22, lOO 

 Anaxogramic method of testing action 



of antagonists, 62 

 Animal excreta. See Human and ani- 

 mal wastes 

 Animal pathogens, survival of, 28-32 

 Animals, microscopic 

 as antagonists, 145-146 

 in soil, 5, 6 

 Antagonism, 14, 54 

 defined, 271 

 types, 47, 49 

 Antagonist, defined, 271 

 Antagonistic action, 51-54, Fig. 5 (p. 



59) . . 



Antagonistic interrelationships among 



microorganisms, 38-41, 46-51 

 Antagonistic microorganisms 



isolation and cultivation, 55-64 

 production of antibiotic substances, 

 51-54,64-79 

 isolation and utilization of sub- 

 stances, 78-79 



