INDEX 



Abraliopsis, light tissue, 128. 



Acanthias, early reproductive cells, 421; 

 teeth, 291-294; uterus, 493. 



Accessory chromosome, 442; relation to sex, 

 450-451. 



Accessory nucleus, 428. 



Achirus, nerve cell, 186. 



Achromatic figure, of mitosis, 25. 



Acid cells, of enteron, 300. 



Acidophile cells, 313. 



Acinus, 53. 



Acrosome, of spermatozoon, 427. 



Adhesive tissues, 409; of Bera, 410; of 

 cephalopods, 414; of coelenterates, 410; 

 of insects (beetle), 415; of leech, 413; of 

 Mollusca, 41 1 ; of mussel, 411; of Proto- 

 zoa, 409; of Remora, 414; of worm, 413. 



Adventitia, 160. 



ALnigma, byssus, 412. 



JEsthenosoma, spine, 378. 



Afferent process, of nerve cell, 176. 



Alimentary structures, of Paramascium, 284. 



Alimentary tissues, general, 279-280; for ab- 

 sorption, 282; of Bdellura, 286; classifica- 

 tion of, 279-281 ; for conduction, 282 ; for 

 digestion, 283; gastric, 283; of Hydra, 

 286; for lubrication, 281; for mastica- 

 tion, 281; pancreatic, 283; serous, 284; 

 of sponges, 285. 



Alligator, lubrication of eye, 397; mucous 

 cell, 392. 



Allolobophora, blood vessels, 153. 



Ameiurus, egg follicle, 456; static tissue, 213. 



Amitosis, 37; epithelium of Guinea pig, 40; 

 in muscle, 89; in ovarian follicle of 

 cricket, 39. 



AmmoccEtes, nephridial tissue, 353. 



Ammodytes, pigment cell, 274. 



Amoeba, motion of, 76. 



Amcebocytes, 343. 



Amphibian, blood vessels, 159. 



Amphioxus, blood channels, 158; cuticular 

 cells, 360. 



Amphitrite, gills, 328. 



Amphotoky, 474. 



Amplification, of epithelial surfaces, 48-51. 



Ampulla, of vertebrate ear, 212. 



Anal glands, of Carnivora, 400. 



Anaphase, 25. 



Anas, nerve-endings on beak, 204. 



Anisotropic substance, 83-90. 



Anomia, attachment, 412. 



Aphrodite, adhesion, 413. 



Apis, honey sac, 291. 



Aplopus, growth period, spermatogonia, 446; 

 postsynaptic spermatogonia, 446 ; sperma- 

 tids, 449; spermatocytes, 448; spermato- 

 genesis, 442 ; summary of spermatogenesis, 



449- 



Arrenotoky, 474. 



Arteries, 149. 



Artemia, parthenogenesis in, 474. 



Ascaris, differentiation of somatic cells, 19- 

 20; origin of reproductive cells, 420. 



Aspredo, carrying of eggs, 492. 



Aster, chromatic, 10. 



Asterias, maturation of reproductive cells, 426; 

 maturation of female reproductive cells, 

 461-469; visual tissues, 229. 



Aster ope, solencytes, 346. 



Astropecten, visual tissues, 229. 



Astroscopus, electric tissue, 118. 



Attraction sphere, 10. 



Auditory hairs, 216. 



Auditory tissues, 215; accessory, 216; in- 

 sects, 216-219; vertebrates, 220. 



Aurelia, eye, 231. 



Axial filament, 428. 



Axis, of cell, 10. 



Balancers, of insects, 212. 



Barb, of feather, 368. 



Barbule, of feather, 368. 



Belostoma, odorous gland, 406. 



Berce, grasping cells, 410. 



Bile capillaries, 302. 



Bissagenous granules, 412. 



Bladder, urinary, 344, 357. 



Blood, 162; of Diemyctylis, 165; of lobster, 

 164; in muscle, 82; of vertebrates, 165. 



Blood corpuscles, red, 172; white, 165. 



Blood glands, 150, 167-173; of crayfish, 167; 

 of mammals, 168. 



Blood vessels, of Allolobophora, 153; Amphib- 

 ian, 159; of Anodonta, 154; of Arthro- 

 poda, 156-158; of Cerebratulus, 151; 

 coats of, 150; of Echinoderms, 154; of 

 Imperialis, 158; of mammal, 159-161; 

 of Turbellarian worm, 150. 



Bone, 70; endochondral, 70; perichondral, 70. 



Bos, tendon, 63; ligamentum nuch.-e, 64. 



Branchiomma, eye, 241. 



59 



