INDEX 



609 



in, 113-114, 118, 131, 134, 141, 



142, 154 

 animal, 153-154 

 enchondral ossification zone, 134, 150, 



151, i5 2 , 153 

 fetal, 134 



hemorrhagic tendency in, 134, 151, 153 

 human, 150-153 



infantile (Barlow's disease), 134, 151 

 marrow changes in, 134, 151, 152, 153, 



154 

 osteoclasts, 153 

 osteogenesis, 134, 152, 153 

 osteoporosis, 134, 153 

 recovery from, 134, 153 

 "Trummerfeld," 134, 153 

 "white line" in, 151, 154 

 Scyphozoa, 39-41 

 Scyphulae, 39 

 Sea-urchin, 27, 30, 48-53 

 Secretion granules (see also under various 



glands), 56, 57 

 Self fertilization, 21 

 Semiscolex (leech), 47 

 Sense-organs (tentaculocysts), 39 

 Serous cavities, fluids in, 264 

 Serpent (snake), 321, 341 

 Sex differences, 70, 96, 118, 164, 228, 341, 

 366, 381, 432, 446, 455 

 modification, invertebrate, 16, 28, 29, 

 30, 31, 35, 36,-4i, 46, 57, 58, 61, 

 62, 63, 65 

 plant, 3, 4 



vertebrate, 79, 80, 394 

 Sheep (Aries), 80, 102, 106, 128, 130, 131, 

 135, 141, 142, 157, 170, 232, 255, 



2 93, 3°9, 367, 393, 443 

 Silk-worm (see Bombyx) 

 Similarity of effects, 459, 461 

 Simocephalus, 29, 58 

 Size of plants, 3 



of animals (see under Body) 

 Skeleton (see also Bone marrow, Rickets, 

 Scurvy, etc.), 133-155 

 bones of, clavicle, 142 

 cranium, 138, 139, 142 

 femur, 134, 138, 140, 141, 150, 155, 



469, 474, 475 

 humerus, 155, 474, 475 

 mandible, 158 

 maxilla, 158 

 pelvis, 142, 144, 147 

 radius, 139 

 ribs, 140, 147, 150 

 scapula, 144 



Skeleton, bones of skull, 139, 141, 142 



sternum, 141, 142 



temporal, 142 



tibia, 144, 149, 150 



vertebral column, 92, 135, 137, 139, 

 142, 144, 147, 165 

 cartilage, 90, 133, 134, 137, 138, 142, 145, 



146, 155, 302 

 chondrodystro phia foetalis, 138 

 chorda dorsalis, 137 

 enchondral ossification, 138, 145, 146 

 fragilitas ossium, 140, 141, 151, 154 

 Haversian canals, 136 

 healing of fractures, 133, 139 

 intervertebral disks, 137 

 invertebrate, 28, 32, 33, 34, 48, 52 

 lacunae, 136 

 osteoblasts, 138 

 osteogenesis, 138, 150 

 osteoporosis, 133, 134, 135, 139, Ho, 141, 

 142, 144, 145, 146, 147, 148, 150, 



151 

 partial inanition, 140-155 



aqueous inanition, 134, 154 



calcium deficiency, 133, 139, 141-142 



phosphorus, 133, 139, 142 



protein, 133, 140 



rickets, 133, 142-150 



scurvy, 134, 150-154 



vitamins, 134, 150 

 periosteum and endosteum, 146 

 radiographic study of, 13S, 140, 146, 



151, 154 



as reserve mineral storehouse, 133, 141 



resistance to inanition, 458 



structural changes in adult bone, 135, 136 



summary of effects, 133-134 



total inanition, 133, 134-139 



vertebrate, 89, 92, 100, 101, 105, 106, 

 107, 109, 133-155 



weight, 134, 135, 143, 154, 464, 467, 47o, 

 471, 472, 473, 474, 475, 476 



in the young, 137-139 

 Skin (see Integument) 

 Smerinthus, 63 

 Snail, 26, 27, 28, 32, 53-57 

 Sodium, in invertebrates, 19, 39, 52, 59 



nitrate, 5 



in plants, 5, 9 



in vertebrates, 99, 104, 105 

 Solanum, 12 

 Sparrow, 321 

 Species differences, 458 



Spermophiles (see also S pernio phil us), 137, 

 253, 276, 297 



