INDEX 



149 



Geographical aspects of biology, 

 24, 26 



Germany, 16, 24, 30, 111 



Gland grafting, 117 



Glutathione, 107 



Great Britain, 26 



Guinea, 26 



Gynase, 84 



Haematozoons, 111 



Heart-action currents, 114 



Herd instincts, 107, 112 



Heredity, 13, 46; vs. environ- 

 ment, 45, 52 



Heterogenesis and evolution, 116 



Historian vs. philosopher, 2 



Holland, 30, 111, 114 



Honesty of scientific men, 55 



Hormone, deficiency, 13 ; excess, 

 13 



Human biology, SO 



Immigration affected by biology, 

 45 



Immortality, 22 



Immunity, 114, 116 



Impetus of experimentation, 44 



India, 121 



Indo-China, 26 



Infantile paralysis, 122 



Infection, 13 



Insect control, 49 



Instincts of the herd, 107, 112 



Institute of Physicochemical Bio- 

 logy, 110 



Instituto Oswaldo Cruz, 99 



Insulin, 42 



Insurance investigation of 

 shortening of life, 12 



Ionization hypothesis, 119 



Italy, 114 



Japan, 26, 122 



Labor vs. intelligence, 15 



La Clinica, xi 



Latin America, 7, 97 



Life, notion of, 22; nature of, 45 



Limiting science, 70 



Malaria, 40, 101, 107, 111, 115 



Manias, biological, 24 



Mar Chiquita, 102 



Marquis wheat, 25 



Materialism, 112 



Mechanism, 64; vs. vitalism, 

 62, 66 



Mechanistic evolution, 53 ; ex- 

 planation, 44 



Medicine, 49, 107, 113, 117 



Mendel's hypothesis, 31 



Mental factors in evolution, 107 



Metabolic gradient, 72 ; theory 

 of sex, 72, 82, 112 



Metabolism, amino acids in, 39, 

 106 



Metamorphosis of Amphibia, 115 



Mexico, 104, 111 



Microstomum, 81 



Minerva's list of universities, xi 



Modern problems of biolog}% 22 



Molecular structures, 114 



Morocco, 26 



Mosaic theory of development, 73 



Motive vs. obligation, 64 



Mutation theory, 30, 114; origin 

 of, 111 



National Research Council, 94 



Negative side of biology, 51 



