INDEX 



277 



Morrill, C. V., 68 

 Morris, M., 199 

 Mrazek, 56 

 Mulsow, K., 68, 6q 



Nereis, 46, 51, 52, 62, 69, 72, 76, 

 94, 99, 104, 105, 113, 122, 123, 



139, 153. 154, 15s, 159, 258 

 Newman, H. H., 198 ff. 

 Newport, G., 12, 84 



Okkelberg, P., 148 

 Osmotic relations, 149 ff. 

 Ostwald, W., 254 

 Oxidation changes, 145 ff. 



Paramecium, 37 ff. 

 Parthenogenesis, 8, 21, 22, 130, 



143, 159, 163 ff., 240 ff. 

 Partial fertilization, 129, 155 ft'.. 



165 

 Patius, 5 



Permeability change, 147 ff. 

 Pfliiger, E., 201 

 Physical changes, 152 ff. 

 Pinney, E., 199 

 Polar bodies, 44 

 Polyspermy, 51, 77, 78, 79, 80, 81, 



82, 83, 161, 260, 262 

 Potts, F. A., 204 

 Prevost et Dumas, 9 ff. 

 Pronuclei, 15 



Radiation, effect on spermatozoa, 



203 

 Reciprocal crosses, 190 ff., 201 

 Reighard, J. E., 25, 141, 147 

 Rejuvenation, 31, 34, 38 

 Reversibility, problem of, 25, 128, 



161 ff. 

 Richards, A., 27, 120, 121, 238 

 Robertson, T. B., 133, 232 

 Roux, W., 64, 84, 85 

 Ruckert, J., 79 



Schucking, A., 95, 134 

 Schulze, O., 84 

 Schwann, Th., 11 

 Seeliger, O., 162 

 Self-fertilization, 203 ff. 



Self-sterility, 26, 203 ff. 



Senescence, t^t,, 34 



Serological c<)m[)arisons, 26, 176, 

 217. 219, 235, 236 



Sex chromosomes, 68 



Shackell, 147, 148 



Shearer, 188, 193 



Smith, J. W., 204 



Sobotta, J., 184 



Spallanzani, Abbe, 6, 25 



Specificity, problem of, 26, 130, 

 184 ff. 



Sperm: aster, 60, 61, 73; centro- 

 some, 19, 49, 70, 71, 74; nu- 

 cleus, 16, 63, 71; receptors, 27, 

 236 



Spermatozoa: activity, 92, 99, 

 109,111,112; agglutination, of, 

 27, 109, 112 ff., 175, 220; 

 aggregations, 94, . 102 ff., 109, 

 112; behavior, 91 ff., 96; chemo- 

 taxis, 102 ff., 114; discovery 

 of, 4, 5; duration of life, loi, 

 131, 132; energy production, 

 92; fertilizing power of, 131, 

 132 ff., 139; fertilizing sub- 

 stance of, 132 ff.; figures of, 49; 

 locomotion, 93; mass effect, 

 134; parts, 48; path of, 64, 65, 

 84, 85; penetration of, 12, 16, 

 22, 51, 53, 54, 64, 131, 267; 

 reactions, 96 ff.; thigmotaxis of, 

 98, 99, 107 



Stockard, C. R., 160 



Stout, 205, 212, 214, 215 



Strongylocentrotus , 1 1 1 , 118, 1 24, 

 148, 157, 164, 193 



Superposition of fertilization and 

 parthenogenesis, 163 ff. 



Teacher (Bryce and), 139 

 Tennent, D. H., 189, iQO, 



^95 

 Tissue specificity, 1S4 ft. 



Toxopneusles^Gi, 14S 



Triepel, A., 139 



Van Beneden E., 13, 15, 67 

 Van der Stricht O., 76 

 Vejdovsky, F., 56 

 Vernon, H. M., 189, 193 



193, 



