INDEX 



463 



(Amphioxus, pages 1-61,' frog, 62- 



labyrinth, 152: 324; 



bony, 



cartilaginous, membranous, 324 

 lactation, 370 

 lagena, 150, 151:322, 323 

 lamina terminalis, 129. 131 : 270, 306 

 Langhans, cells of, 446, 447 

 larva, Amphioxus at the critical 



stage, 4, 54 



laryngeal chamber, 165, 166 

 laryngo-tracheal groove, 332 

 larynx, 329, 332 

 latebra, 239, 243, 245 

 lateral, dorsal aorta, 179, 180, 182 : 



272, 291, 292, 341; folds, 281, 



281; of amnion, 293; 



line nerve, 142, 156, 157; 



line organs, 141, 156, 157; 



mesocardia, 344, 350 ff., 351; 

 - plate, 31: 123-124, 170, 171, 



194 : 263, 278 

 Legros, 53 

 Lemurs, allantois, 434, 436; placen- 



tation, 440 



length, of human embryos, 407, 411 

 lens,146-148, 146, 147 : 283, 316, 317, 



318, 318, 320-321; - - placode, 



146 



lenticular zone, 319 

 life history, Amphioxus, 3; - 



chick, 231; frog, 63 ff.; 



Mammal, 369 ff. 

 ligament, denticulate, 49; gas- 



tro-hepatic, 335; interverte- 



bral, 209; uterine, 372 



Lillie, 277; quoted, 299-300, 352 

 limbs (and buds), 65, 128: 285, 286, 



347 : 406, 406, 409 

 lips, 158, 159, 166:413, 413 



liquor, amnii, 430; folliculi, 376 



liver, 36, 42, 55: 118, 122, 159, 165, 



166, 167 : 304, 332-333, 335, 345, 



348, 351 

 lobe, olfactory, 129 : 305 ; optic, 



129,132:307 



lobus olfactorius impar, 38 

 loculi, placental, 448 

 Loeb, L., 378, 442 

 lung, 67, 165, 167: 304, 310, 332, 



335, 351 



lutein, 378; cells, 378 



lymphatic, hearts, 189, 191: 349-350; 

 sacs, 191; sinuses, 190- 



191, 190; system, 189-191, 



190; 



tissue, 168 



Maculse, acustic, 323 

 Mall, 407, 411 

 malleus, 325 



Malpighian bodies, 200, 201, 205 : 356, 

 357, 359, 362 



228; chick, 229-367; mammal, 368-454.) 



Mammal, outline of life history, 

 369 #. 



man, allantois, 435 ff.; amnion 

 formation, 428 ff., 430 ; amnionic 

 cavity, 399, 400, 424, 444, 445; 

 blastodermic vesicle, 399, 400; 

 chorion, 444, 446, 446; chromo- 

 some number, 377; embryo, early, 



399, 400, 401 ; development 



of external form, 399 ff.; in 



utero, 445; exocoelom, 429, 433; 

 germ layers, 396 ; gestation, 369 ; 

 lutein, 378; mesoderm, 399, 400; 

 notochordal canal, 398; ovary, 371, 

 372 ; oocyte, 373 ; placenta, 442 jf., 

 444, 445; placentation, 439, 440, 

 441; proamnion, 429; reproductive 

 system, female, 372 ; trophoblast, 

 389; trophoderm, 422; uterus, 

 gravid, 444; yolk-sac, 433 ff.; 

 yolk-stalk, 444, 445 



mandibular arch, aortic, 179, 183: 



275, 278; cartilaginous, 



164, 216; visceral, 122, 



160, 160, 163: 283, 285, 304, 330; 



process, 404, 404, 406, 407, 



412, 412 ; ridge, 158 



Manis, placentation, 440 



marginal, cells, 244, 245-246, 245; 



notch, 258 ; sinus, 252, 252, 



255, 290: 431, 432, 432, 449, 449 



margin of overgrowth. 247, 249, 258, 

 277, 277 



Marshall, 378, 442; quoted, 67- 



68; and Bles, 183, 201 



Marsupialia, embryonic membranes, 

 419; gestation, 370, 419; ova, 418- 

 419; placentation, 419, 437, 439, 

 440 



marten, placentation, 440 



mass, inner cell, 382, 383, 384, 385, 



386, 390; intermediate cell, 



173, 193: 265-266, 266, 355 



maturation, 5/8, 9: 73 ff., 75, 82 ff.; 

 240, 340, 341:374, 376-377 



Maurer, 180 



maxillary process, 404, 406, 407, 412, 

 412 



measurement of human embryos, 407, 

 411 



meatus, 325 



Meckel's diverticulum, 434. See 

 also cartilage 



medulla (oblongata), 117, 129: 308 



medullary folds, 16, 21, 22, 23: 261, 

 266, 268, 269, 270, 278: 398; - 

 furrow (groove), 269 : 394, 396, 398, 



401 ff., 401 ; plate, 21, 22, 23 : 



110-111, 110, 117, 120, 124, 137, 

 194: 252, 253, 260, 261, 263, 264, 



