INDEX 



423 



polyspermy, 266 



larvae, excretions and male production 

 in Cladocera, 305 



drifts, 359 

 Instinct, 9 



social, 7, 47, 48, 49, 52 

 Integration of aggregations, 81, 87, 344, 



water vibration, 63, 90, 95 

 tactile, 88 

 odor, 89 

 sight, 89 

 sound, 92 



substratal vibration, 94, 96 

 biophysical, 96 

 mitogenetic rays, 97 

 Intersexes, in Bonellia, 293, 294 

 in Crepidiila, 295 

 in nematodes, 302 

 Isopods, land, 13, 361 



formation of aggregations, 43, 51, 60, 



71, 181 

 aestivation, 71 



stage of social development, 87 

 relation of bunching, to water con- 

 tent, 182 



to oxygen consumption, 181, 184 

 relation of bunching, to water con- 

 tent, 182 

 water, formation of aggregations, 36, 52 

 aggregations in nature, 52, 71, 194 

 laboratory aggregations, 71, 74 



Jackals, marauding packs, 28 



Jahn, T. L., 162, 170, 171, 172 



Jellyfish, 12, 359 



Jennings, H. S., 39, 40, 41, 42, 61, 62 



Jewell, M. E., 117 



Johnson, C. G., 150 



Johnson, H. B., 330 



Johnson, W. H., 42 



Jorstad, L. H., 153 



Just, E. E., 69, 70, 265, 266, 272, 273 



Kahn, M. C, 253, 254, 257, 258, 259 



Kalmus, H., 123, 124, 136 



Kant, vii 



Katydid, synchronism in chirping, 94 



Katz, D., 344 



Kawajiri, M., 116, 117 



KCl, crowding and resistance to, 139, 209, 



274 

 KCN, mass protection from, 215, 260 



affect on male production in Cladocera 

 308 

 Kennealy, A. E., 116, 132 

 Kennedy, C. H., 42, 89 

 Knab, F., 66 



KOH, mass protection from, 216 

 Krajnik, B., 185 

 Krizenecky, J., 22, 51 

 Krogh, A., 186 

 Kropotkin, P., 353, 360 

 Kuczynski, R. E., 136 

 Kuester, E., 106 

 Kulagin, N. M., 120 

 Kurepina, M., 156, 215 



La Baume, W., 316, 318 

 Ladybird beetle abundance, 359 



see also Coccinellidae 

 Lag period, 161, 172, 248 

 Lake as a microcosm, 83 

 Langhans, V. H., 304 

 Lapicque, L., 223 

 Lasiiis, host for nematodes, 300 



Lead nitrate, mass protection from, 213, 

 258 



Leadership, 92, 344, 345, 348, 349 



Leeches, 12 



relation to young, 25 

 mass protection from colloidal silver, 

 204, 211 



Legendre, R., 69, in, 119 



Leibnitz, vii 



Lew?wa,growthpromotionby"auximones," 



159 

 Lemurs, 347, 348 

 Leopard, 349 

 Lepiney, J. de, 319 

 LeuciscHs, protection from lead nitrate, 



213 

 Leucocytes, culture in vilro, 150 

 Liebig, J., 103 

 Life, origin, 354 



Light, and temperature, relation to activ- 

 ity, 77 . 

 mass protection, of bacteria against, 

 260 

 of spermatozoa against, 276 

 and wing production in aphids, 313 

 see Temperature and light 



