INDEX 



249 



Ferments, 77 

 See enzymes 



Filippi, 103 



Filterables, 135-141 



Fischer, 78, 83 



Fitzgerald, 105 



Flexner, 11, 115, 130, 138 



Flies, aseptic, 87, 88 

 duration of life of, 89 

 influence of temperature on, 

 94 



Fluorine, 27, 32 



Fluosilicate ion, 29 



Forchheimcr, 215 



Fourth dimension. 234 



Fowl cholera, 117, 118 



Fraenkel, 80 



Franco-Prussian War, 167 



Freud, 212, 214, 215, 216, 217, 

 218, 219, 220, 221, 222, 223, 

 226, 227, 228 



Frog, metamorphosis of, 92 



Frosch, 136 



Fruit fly, metamorphosis of, 93 



Galen, 157 



Gas masks, 11 



Gas shells, 67, 69, 70 



advantages, 70 



their future, 73 

 Gas warfare, 11, 61-75 



compounds used, 74 



early methods, 62 



protection against, 64, 68 

 Gaseous explosions, 41 

 Gates, 138 

 Geiger, 18 



Germ theory, 172-191 

 Gibbs, 111 

 Girard, 173 

 Gorgas, 165 

 Graham, 79, 80 

 Gravitation, 238 



Einstein's law of, 242 

 Great Eastern (ship), 38 

 Gudernatsch, 92, 93 



Guerin, 159 

 Guinea-pig, 132 

 Guyenot, 87 



Hadfcld, 40 



Haggard, 106, 107 



Haldane, 103, 104, 105 



Hamilton, F., 173 



Harrow, 9, 76 



Hartmann, 188 . 



Hay fever, 123, 134 



Heath, 58 < 



Helium, 23, 25 



Henderson, L. /., 104 



Henderson, Y., 11, 95, 103, 106, 



107 



Hewitt^ 177 

 Hews on, 173 



Hexamethylenetetramine, 67, 74 

 Hodgen, 173 

 Holmes, O. W., 161 

 Holmes, T., 163, 176 

 Hopkinson, 41 

 Hospital gangrene, 160, 167, 180, 



181 



Hospitals, at present, 163, 169, 

 state of, several decades ago. 



159, 162, 163 

 Hull, 20, 29 

 Hunt, 22 

 Hydrogen, 23, 32 



Immunity, 115-130 

 Infantile paralysis, 137, 138 

 Infection, 148-151, 174 

 Influenza, 150 



Intelligence, methods of meas- 

 uring, 196-198 

 relation to occupation, 208 

 Ion, 28 

 Isosteric substances, 33 



Jackson, 165 

 James, W., 228 



