INDEX 



243 



Inventions, development of, 194 



major, 23 

 Inventors, 61 

 Ions, 133 

 Isomers, 127 

 Isotopes, 109, 138 



chemicals made with, 178 



neon, 108 



uranium, 142, 143 



Janssen, Jules, 116, 234 



Jeans, Sir James, 84 



Joffe, 184 



Joule, J. P., 94 



Junto Society, 86 



Jupiter, satellites of, 79, 99 



Jussieu, A. de, 147 



Kaempffert, Waldemar, 199 



Kaldor, N., 204 



Kant, Emmanuel, 6, 148 



Kapitza, Peter, 181, 184, 189 



Keilin, D., 170 



Keith, Sir Arthur, 37 



Kekule, August, 124, 125, 126, 127, 



139 

 Kelvin, Lord, 61, 62 

 Kendall, May, 53 

 Kepler, J., 58, 81, 90, 91 

 Kepler's laws, 91, 92, 96 

 Kirchhoff, Gustav, 116 

 Koch, Robert, 167 

 Kodak Research Laboratories, 183 

 Koellicker, Rudolf, 155 

 Koelreuter, Joseph, 148, 151 

 Koerner, W., 127 

 Kula, 230 



Lacy, W. A., 144 



Lagrange, J. L., 92 



Lamarck, Jean de, 148 



Languages, classical, 3 



Langmuir, Irving, 140 



Laplace, P. S., de, 92, 93, 152, 153 



Laue, Max von, 111 



Laurent, A., 124 



Lavoisier, A. L., 93, 120, 121, 152, 



153, 169 

 Law, scientific, 57, 58 

 Laws of history, 2 

 Laws of motion, 89 

 Lawrence, E. O., 141, 177 

 Leaders, selection of, 235 

 Leadership in free society, 230 

 Leaves, function of, 151 

 Leeuwenhoek, Anton van, 153 

 Leibniz, G. W. von, 84, 86 

 Lenard, P., 106 

 Lenses, 95, 96 

 Leucippus, 70 

 Lewis, G. N., 139, 140 

 Liaison officer, scientific, 219 

 Liebig, Justus von, 122, 123, 124, 



127, 129, 169 

 Light, corpuscles of, 98, 99 



electromagnetic theory of, 101 



interference of, 100 



polarization of, 101 



rays of, 99 



velocity of, 99 



waves of, 99, 100 

 Linnaeus, 147, 162 

 Literature, development of, 22 



modern, 39 

 Little, A. D., 66 

 Lockyer, Norman, 116 

 Louis XIV, 85 

 Lucretius, 5, 73, 121 

 Lyonet, 149 

 Lysenko, T. D., 183 



MacMunn, C. A., 170 

 Magic, 45, 46, 47 

 Magic and religion, 48 

 Magnet, discovery of, 102 

 Malinowski, B., 47, 48, 230 

 Malpighi, Marcello, 153 

 Malthus, T., 148, 162 



