INDEX 



249 



Spiral nebulae, 117, 118 



Sprengel, Christian, 151 



Stability of conditions, 1 



Stahl, George Ernst, 120 



Staining technique, 145, 153, 156 



Stamp, Lord, 14 



Stars, observations of, 90 



Steensen, Nils, 147 



Stellar composition, 116 



Stine, C. M. A., 206, 207 



Stoic philosophy, 72 



Stoicism, 74 



Strasburger, Eduard, 158 



Sugars, chemistry of, 130 



Superstition and science, 45 



Sutton, W. S., 160 



Swammerdam, Jan, 150 



Swedish Empire, 27, 150 



Sylvius, Aeneas, 20 



Synthetic organic chemicals, 178 



Technocracy, 229 



Technological research institutes, 



176, 214 

 Technology, 13, 42, 43 



of ancients, 17 



of electricity, 44 



impact on society, 231 



industrial rise of, 174 

 Technology and progress, 43 

 Technology and science, 44 

 Telegraph, 104 

 Teleology, 73 

 Telephone, 104 

 Telephone research, 179 

 Telescope invented, 78, 83 

 Thales, 68, 70, 71 

 Theories, 54 



absurd, 55, 56 



nature of, 57 



postulates of, 55 



verification of, 55 

 Theory, general field, 115 



Thermodynamics, laws of, 94 



Thomson, Elihu, 175 



Thomson, J. J., 61, 62, 107, 109, 



177, 188 

 Thorium, radioactivity of, 135, 137 

 Tobacco, mosaic, 167 

 Tools, 23 



Trembley, Abraham, 149, 150 

 Trobriand society, 230 

 Tubes, electronic, 109, 110 



photo, 110 

 Tutankhamen, 28, 43 

 Tyndall, J., 174 

 Types, chemical, 124 



Universities, medieval, 75 

 Universities and ecclesiastics, 173 

 Universities and science, 173 

 Uranium, radioactivity of, 135, 137 

 Uranium isotopes, 142 

 Urea, 129 



synthesis of, 155 

 Urey, H., 139 



Valence bonds, 139 



Valve tubes, 110 



Vaucheria, 157 



Vesalius, Andreas, 77, 81, 145, 146 



Vico, 7, 9 



Vinci, Leonardo da, 77, 81 



Viruses, 167, 168 



Vitamins, 130, 169 



Vogt, W., 172 



Volta, A., 103 



Waage, P., 131 



Wallace, A. R., 145, 148, 162, 163 



Wallace's line, 163 



Walton, E. T. S., 141 



W^ar, foresight in, 229 



Weaver, Warren, 199 



Wells, H. G., 2, 51, 174 



Western Electric Company, 231 



