INDEX 



151 



Scandinavia, 24, 117 



Science, definition of, 3 ; influence 

 of on philosophy, 59; in our 

 day but not of it, 55 ; limita- 

 tion of, 70; object of, 3 



Scientific laws always negative, 

 58; progress, 16 



Seals, 26 



Selective elimination, 90 



Senegal-Niger, 26 



Serotherapy, 111, 113 



Sex, determination of, 22 ; meta- 

 bolic theory of, 72, 82, 112 



Siboga Expedition, 114 



Slavery, 29 



Snake farm, 99 



Social biology, 107 



Social Psychology, Journal of, xi 



South Africa, xi 



Spain, 27, 120 



Spectrotherapy, 108 



Splenomegaly, 101 



Statistics, biological, 107 



Statocysts, 109 



Success to a biologist, 14 



Surgeons, American College of, 1 



Sweden, 118 



Switzerland, 121 



Sydney, University of, 122 



Syphilis, 122 



Symbiosis, 109 



Synthesis of ammonia, 113; of 

 indigo, 113; of sugars and 

 proteins, 113; organic, 110 



Technique, scientific, 110 



Terpenes, 113 



Theories, axial gradient, 72, 79; 

 biological, 109; color, 113; 

 emergent evolution, 72, 87 ; 

 metabolic gradient, 72 ; meta- 

 bohc, of sex, 72, 112; mosaic, 

 of development, 73; mutation, 

 114; organismal, 72; organisa- 

 tioncentrum, 72, 77; plasmo- 

 geny, 72 



Thermodynamics, 113 



Thyroid gland reaction, 115, 121 



Tissue culture, 115 



Transformation of energy, 114 



Treponema pallidum, 122 



Tropisms, 37 



Tuberculosis, 113 



Tunis, 26 



Typhoid fever, 7, 41 ; injections, 

 100 



United States, 26, 27, 62, 93 



Variations and modifications, 51 



Violet rays, 119 



\'italism vs. mechanism, 62, 66, 

 112 



Vitamins, 39, 50 



Viruses, filterable, 45 



Votes and science, 62 



War, biology of, 64 



Western Front, 41 



Whistle experiment on dog, 10 



Wrong use of science, 17 



Yellow fever, 6, 41 



