GENERAL INDEX 



413 



Saliva, antibacterial action of, 216 

 Saprophytic organisms 



for disease control, 263 



in soil, 15-18 

 Saprophytism, 38 

 Sarcoma cells, 169 

 Sea water, bactericidal action of, 32 

 Seed inoculation, 3 1 1 

 Selective culture method, 7 

 Semisolid media, 63, 81 

 Serial dilution method, 73-74, 84 

 Sewage, 24-25, 85, 92 

 Silkworms, destruction of, 159 

 Simplexin, 92, 94, 175, 189, 233, 320, 



329 

 Simultaneous inoculation method, 60, 



61, 102, 106 



Skin diseases, 150 



Slime disease, 308 



Smuts, bacteria antagonistic to, 151 



Soil 



actinomycetes in, 6, 8, g, 1 1 5-1 1 8 



as culture medium, 10— 1 1 



as habitat of microorganisms, 1-2 



bacteria in, 6, 8, 9, 1 1, 92 



biological state, 5—6 



chemical composition, 4—5 



effect of heating, 304 



effect on plant growth. Fig. 34 (p. 



254) 

 fungi in, i, 6, 8, 9-10, 149 

 invaders, 301 



microbial population. See Soil micro- 

 organisms 

 pathogens in, 16-18, 27-36 

 physical properties, 2-4 

 saprophytes in, 15, 18 

 treatment, effect on microorganisms, 

 8 

 Soil-borne diseases, 300—313 

 methods of control, 14—15 

 Soil enrichment method, 53—55 

 Soil inoculation method, 57-59 

 Soil microorganisms, 6—9, 34—35 

 effect of bacteria, 29 

 equilibrium, 38 

 nature of, 16— i 8 

 Solid media for testing antagonistic ac- 

 tion, 61-63, 64 



Space antagonism among microorgan- 

 isms, 44, 50 

 Spectrum, bacteriostatic, 59, 76, 319, 



331 

 Spinulosin, 70, 133, 142, 170, 175, 



329 



chemical nature, 175 

 Spirocheticidal action of penicillin, 



235, 247-248 

 Spore-forming bacteria 



antibiotics produced by, 233—234 



as antagonists, 56, 87-95 

 Spore germination, 149 

 Spores, preparation of, 65, 68 

 Sporicidal action of penicillin, 235 

 Spot inoculation method, 63 

 Stable manures, 20-23 

 Staling of medium, 47, 152 

 Staphylococcus aureus infections, treat- 

 ment with penicillin, 275, 278 

 Staphylococci as antagonists, 104 

 Sterilization of soil, 304 



effect on coliform bacteria, 10 



partial, 155, 304 

 Streptamine, 198, 199 

 Streptidine, 197-199 

 Streptococcal infections, treatment of, 



275 

 Streptococci as antagonists, 103 

 Streptomycin, 75, 127, 128, 153, 165, 

 175> 299, 319, 326, 329 



activity, 193-194 



administration, 290, 292, 293-294 



agar, 78 



agar diffusion method for measuring 

 activity, 84 



bacteriostatic spectrum, 1 24 



chemical nature, 175, 178, 193-200 



chemotherapy, 266, 287-296 



compared with other antibiotics, 74 



crystals, Fig. 19 (p. 196) 



curve, 79 



discovery, 316 



effect on bacteria, 74, 124, 223, 

 317-318 



effect on phage, 165 



inactivation, 195, 199-200, 225, 

 240-241 



in vivo activity, 83 



isolation, 194 



