INDEX 



239 



Chemical Physics, Institute of, 



Leningrad, 184 

 Chemical structure, 125 

 Chemical symbols, 121 

 Chemical synthesis, 122 



natural compounds, 129 

 Chemicals, aliphatic, 125 



aromatic, 125 



synthetic organic, 122 ff., 178 

 Chemistry, 41 



apparatus for, 119 



development of, 119 



organic materials for, 119 



organic synthesis, 123 



physical, 130 



physiological, 129, 178 

 Childe, Gordon, 17, 18 

 Christianity, astronomical doc- 

 trines of, 79 



effect on science, 74, 75 

 Christianity and philosophy of his- 

 tory, 5 

 Chromatic aberration, 97 

 Chromosomes, 158, 159, 160, 161 

 Civilization, conditioned by migra- 

 tion, 36 



cycles of, 29 



history of, 225 



progress of, 21 



revolutions of, 28 

 Cockroft, J. D., 141 

 Coincidence observations, 51 

 Colbert, J. B., 85 

 Collingwood, R. C, 8, 9, 33 

 Color vision, 97 

 Combustion, principle of, 120 

 Common sense, 55, 56 

 Communication in ancient times, 



18 

 Comte, Auguste, 7, 116, 229 

 Conant, J. B., 198 

 Constantinople, fall of, 19 

 Constructs, 56 

 Cook, Captain, 163 



Coolidge, ^V. D., 110 

 Copernicus, 70, 78, 79, 90 

 Cosmology, 90 



Copernican, 91 



early, 88 

 Couper, A. S., 125, 139 

 Crafts, J. AI., 127 

 Crawford, O. G. S., 37, 38 

 Crookes, William, 105, 106 

 Crowther, J. G., 183, 229, 233 

 Cryogenic laboratories, 177 

 Curie, Madame, 135, 136 

 Curie, P., 135 

 Cuvier, G., 147 

 Cyclotron, 141, 177 

 Cytochrome, 170 

 Cytology, 145, 153, 155 



Dalton, J., 93 



Daniel, G. E., 23 



Darwin, Charles, 53, 145, 148, 156, 



162, 163, 164, 165 

 Darwin, Erasmus, 148 

 Data, sense, 56 

 Davaine, Casimir, 166, 167 

 Davenport, F. M., 232 

 Davisson, C. J., 113 

 Davy, H., 93, 103 

 Debye, P., 133 

 De Forest, Lee, 109 

 Democritus, 70 

 Descartes, Rene, 6, 58, 61, 79, 80, 



96 

 Deuterium, 139 

 Diffraction, 98, 99, 100 

 Disintegration, social, 10 

 Dispersion, 97 

 Dodgson, Charles L., 68 

 Doppler, Christian, 118 

 Doulton, John, 121 

 Dreisch, Hans, 171 

 Drosophila, 160, 161, 181 

 Dujardin, Felix, 154 

 Dumas, Jean, 124 



