INDEX 



703 



Schron, 118 



Schulin, 156 sq. 



Schultz, 320 



Schultza, 393, 642, 647, 650 



Sehutz, 532 



Schweigger-Seidel, 173 



Sciwnis vulga/ris, 41 



Sclater, 65 



Sclerophytum, 9 



Scorpion, 350 



Scyllium, iTl 



Seal, gestation of, 32 ; breeding 

 season of, 59 aq. 



Sea-urchin, 199, 225, 301. See also 

 under generic names 



Sedgwiek. 6, 73, 186 



Seeliger, 199 



Seitz, 149, 156, 158 



Selenka, 382, 392, 420, 465 



Seligmann, 305, 306. See also 

 Shattoek and Seligmann 



Semen, chemistry of, 282 sqq. 



Seminal fluid, 176 



Semnopithecus entellus, 63, 89 sqq., 97 



Semnopithecus nasicas, 464 



Semon, 18, 38, 39 



Semper, 10, 12, 14, 15, 22, 31 



Senescence, 675 sqq. 



Seps, 151 



Seps chalcides, 380 



Serralach and Par^s, 238 



Serres. 528 



SertoM, 253 



Seubert, 232 



Sex, determination of, chap. xv. 



Sfameni, 68 



Shad, 18 



Sharpey, 400, 466 



Shattoek and Seligmann, 311, 315 



Sheep, 26 ; dioestrous cycle in, 37 ; 

 oestrous cycle in, 42 sqq., 107 sqq. ; 

 ovulation in, 136 ; corpus luteimi 

 in, 147 sq., 152 ; 183 ; Mendelian 

 experiments on, 198 ; in-breeding 

 in, 209 ; accessory reproductive 

 organs in, 229, 247 sq. ; castra- 

 tion in, 306 ; fcetal nutrition in, 

 371, 376, 380, 386, 396 sq., 400, 

 403 aq., 407, 417, 427, 435, 484, 

 487 ; pregnancy in, 495, 508, 

 £20 ; parturition in, 535 ; lacta- 

 tion in, 554 sq. ; fertility in, 590 

 sq., 596 sqq., 604 ; abortion in, 

 612 sq., 617 sqq. ; growth of, 668 ; 

 age attained bv, 681 

 Sherrington, 256, "259, 330 

 Shortt, 44, 47 



Shrew, breeding .season of, 60 ; 

 fcetal nutrition in, 372, 377, 

 391 sq., 452-5 



Siebold, von, 186, 628 sq. 



Sigismund, 162 



Silkworm moth, 184, 217, 280 sq., 



307, 626 

 Simocephalus, 632, 644 

 Simpson, Sir James, 537, e41 



J. Y., 213 



Simpson (Sutherland) and Marshall, 



262 

 Sims, 609 



Sinfity, 510. S-f also De SinSty 

 Siphostoma jloridce, 652 

 Sipunculids, 224 

 Sirenia, 376 aq., 553 

 Sixta, 38 n. 

 Skin, changes in, during pregnancy, 



623 

 Siemens, 499, 506, 517 

 -Sloeum, 524 

 Sloth, 402, 563 

 Slowtzofl, 283 



Smith, F., 314, 536, 667, 669, 

 678 



Geoffrey, 308, 640, 653. 658 



Tyler, 642 



Smyth, 126 



Snail, 186 



Snakes, scent-glands of, 31 



Snipe, 27 



Sobotta, 42, 132, 143 sqq., 



233, 439 

 Sokoloff, 317 

 Sou, 349 

 Somerset, 58 

 Sow, cestrous cycle in, 

 ovulation in, 135 ; 145 ; 

 ing in, 208 ; fcetal nutrition in, 

 386, 394 sqq., 403, 484; partu- 

 rition in, 537 ; fertility of, 586, 

 591, 600, 606, 671 

 Spallanzani, 4, 19 sq., 22, 23, 56, 



140, 165, 181 aqq., 203 

 Sparrow, 24, 26, 157 

 Specht, 607 

 Spee, von, 363, 393, 443 aqq., 449, 



466 

 Spencer, Herbert, 587 sqq. 

 Spermatogenesis, chap. v. 

 Spermatozoa, structure of, 172 sqq. ; 

 movements of, 176 sqq. ; chemo- 

 tactio properties of, 214 sqq. ; 

 chemistry of, 288 sqq. 

 Spermophilua, 160 

 Sphmrechirvua, 179, 300 

 Sphcerechinua granulosiis, 293, 300 

 Spider crab, 307 

 Spiegelberg, 542 sq. 

 Spiegelberg and Gscheidlen, 520 sq. 

 Spina, 254 

 Spinax, 151 



150, 166, 



50, 334 ; 

 in-breed- 



