INDEX 



277 



Morrill, C. V., 68 

 Morris, M., 199 

 Mrazek, 56 

 Mulsow, K., 68, 69 



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

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



139, 153, J 54, 155, 159, 2 58 

 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 ff.. 



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, 



i6iff. 



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

 Robertson, T. B., 133, 232 

 Roux, W., 64, 84, 85 

 Rifckert, J., 79 



Schucking, A., 95, 134 

 Schulze, O., 84 

 Schwann, Th., n 

 Seeliger, O., 162 ' 

 Self-fertilization, 203 ff. 



Self-sterility, 26, 203 ff. 



Senescence, 33, 34 _ 



Serological comparisons, 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, 101, 

 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, in, 118, 124, 

 148, 157, 164, 193 



Superposition of fertilization and 

 parthenogenesis, 163 ff. 



Teacher (Bryce and), 139 

 Tennent, D. H., 189, 190, 193, 



.195 

 Tissue specificity, 184 ff. 



Toxopneustes, 61, 148 

 Triepel, A., 139 



Van Beneden E., 13, 15, 67 

 Van der Stricht O., 76 

 Vejdovsky, F., 56 

 Vernon, H. M., 189, 193 



