INDEX 



3^5 



Hydrocarbons, 71 



Hydrogen, 9, 31, 33, 38-40, 46, 47, 40, 51- 



55, 58, 59-61, 63, 66, 67, 70-72, 88, 97, 



98, 100, lOI 

 Hydroid, 113, 290 

 Hydrosphere, 26, ;};^, 34, 99 

 Hypokippus, 266, 267 (Fig.) 



Ichthyornis, 230 



Ichthyosauria, 201 ; see Ichthyosaurs 



Ichthyosaurs, 155 (Fig.), 172, 193-196, 200, 

 203-205 (Figs.), 207, 210, 213, 230, 239, 

 292; see Ichthyosauria 



Ictidopsis, 190 (Fig.) 



Iguanodontia, 221-223, 224; see Iguano- 

 donts 



Iguanodonts, 197, 211, 221-223; see Igua- 

 nodontia 



Immunity, 73, 74 



India, 180 



Indian Ocean, 201 



Individual, 19, 20, 22, 23, 68, 69, 78, 92, 95, 

 97, 103, 144, 147, 154, 233, 238, 244, 249 



Individuality, 113, 148 



Inhibition, 65, 66, 74 



Inorganic, compounds, 107, 143; environ- 

 ment, see Environment, inorganic 



Insecta, 133, 253, 291; see Insects 



Insectivore, 235-237, 239, 259, 292; see 

 Food adaptations 



Insects, 130, 136, 181, 185, 254, 291; see 

 Insecta; relation of plants to, 105 



Interaction, 5, 6, 15-23, 39, 53, 54, 56-58, 

 68, 69, 71-79, 80, 98, 106, 109, 116-118, 

 120, 142-145, 147, 150, 152, 154, 160, 

 231, 233, 242, 244-246, 251, 268, 271, 

 278, 280, 282, 283 



Internal secretion, 74-79, 143, 160, 249- 

 251, 280, 282, 288, 289 



Invertebrata, 1 18-140, 146, 153, 154, 253; 

 see Invertebrates 



Invertebrates, t,t,, 50, 64-66, 75, 117, 118- 

 140, 153, 160, 231; see Invertebrata 



Iodine, 54, 66 



Ionization, 39, 53-56, 63, 66; see Ions 



Ions, 14, 39, 54-56, 59, 61, 63, 67, 97, 117, 

 see Ionization; negativ^e, 54, 55, 66, 88, 

 176; positive, 54, 55, 88, 176 



Iron, 32, 32>, 46, 47, 50, 52, 54, 65, 66, 67, 

 68, 71, 82, 88, 90, 118, 153 



Italy, 206 



Jaekel, Otto, 217 



James, William, 7 



Jaws, 190, 191, 214, 230, 245 



Jellyfish, 126, 127, 129, 130 (Fig.), 290 



Jennings, H. S., 113, 115-117 



Johannsen, W., 147 



Joly, 28, 36 



Joule, James Prescott, 13 



Jurassic, 135, 138, 153, 161, 168, 175, 178, 

 193-196, 198, 200, 205, 207, 210, 211, 213, 

 217, 221, 222, 224, 227-230, 236, 256 



Kangaroo, 239, 243, 244, 292; tree, 203, 



239, 243, 244 

 Kansas, 209 

 Kant, Emmanuel, 2 

 Karoo, 189 

 Keewatin, 50, 153 

 Kelvin, William Thomson, Lord, 14, 27, 49, 



53 

 Keratin, 63, 153 

 Keweenawan, 50, 153 

 King, Clarence, 27 

 Kligler, Israel J., 87, 89, 91 

 Kohl, F. G., 92 

 Kolliker, A., 94 



Kowalevsky, Woldemar, 257, 266 

 Krakatau, 285, 286 

 Kritosaur, 222; see Kritosaurus 

 KritosaitruSy 223 (Fig.); see Kritosaur 

 Krypton, 41 



Lahidosanriis, 187 (Fig.) 



LabjTinthodont, 183 



Lacertilia, 193, 201, 231; see Lizards 



Lagoons, 184, 189, 196-198, 220, 262 



de Lamarck, Jean Baptiste P. A. de Monet, 



2, 143, 157, 232, 249, 253, 279 

 Lampreys, 168 

 Lamp-shells, 122, 123, 291; see Brachi- 



opoda, Brachiopods 

 Lanarkia, 165 



Lancelets, 162 (Fig.), 292; see Amphioxus 

 Laplace, Pierre Simon, RIarquis de, 25, 34, 



286 

 de Lapparent, Albert A. C, 29 

 Laramide, 135, 136 



