INDEX 



The first page only of an account is shown. Where there is more than one 

 reference, italic type shows the most important. 



Numbers in heavy type refer to pages with illustrations of the structure in 

 question, but these are only shown where they are separated from the written 

 account. 



Abdomen of cockroach, 229 



of crayfish, 195 



of frog, 346 



transverse section of, 349 



of rabbit, 420 

 Abdominal or peritoneal cavity, 

 420 



pores, 312, 322 

 Abomasum, 493 

 Abscesses, 65, 77 

 Absorption, 7, 444 

 Acanthia lectularia, 251 

 Acanthias, 311, 312, 336 

 Acanthodii, 555 

 Accommodation, 467 

 Acarina, 223 

 Acetabular facet, 321 

 Acetabulum of frog, 358 



of pigeon, 405 



of rabbit, 436 

 Acetylcholine, 613, 614 

 Aciculum, 176 

 Acini, 510 

 Acipenser, 546 

 Acquired characters, 725 

 Acromion, 356, 435 

 Actin, 521 

 Actinia equina, 115 

 Actinopterygii, 545, 551, 555 

 Acfinozoa, 115 

 Actinula, iii 

 Activity, 6 

 Actomyosin, 521 

 Acusticolateralis system, 344 

 Adambulacral ossicles, 289 



spines, 288 

 Adamsia palliata, 147 

 Adaptation, 17 

 Adaptive radiation, 240, 474, 495, 



556 

 Adder, 550 

 Adrenal bodies or glands, 18 



of dogfish, 344 



of frog, 367 



of rabbit, 445 

 Adrenaline, 18, 335, 470, 614 

 Adult, 4, 246 



Aedes, 148 



Aerobic organisms, it 



Afferent, or sensory, fibres, 458 



Afterbirth, 670 



Aftershaft, 395 



Aglais iirticcs, 256 



Agnatha, 542, 553 



Ague, 69, 72, 74 



Air bladder, 546, 59J 



Air capillaries of bird, 410 



cells, 446 



sacs, 409, 410 

 Alae cordis, 205 

 Ala spuria, 394 

 Albumen, 7 

 Alcohol, II 

 Alderfly, 254 

 Algae, 22, 79, 503 

 Alimentary system, 593. And see 



Canal, alimentary 

 Alisphenoid canal, 428 

 AUantois, 655 



of bird, 655 



of mammal, 666 

 Allelomorphs, 685, 699 

 Alligator, 601 

 Allolobophora, 158, 159, 160, 164, 



175 

 Alternation of generations, 108 



in Aphis, 251 



in liver fluke, 126 



in malaria parasite, 69 



in Monocystis, 45 



in Obelia, 108 



in tapeworms, 133 

 Alveolar layer in Vorticella, 57 

 Alveoli, 446, 511 

 Amblystoma, 677 

 Ambulacral groove of starfish, 287 



ossicles, 289 



ridge, 289 

 Ametabola, 246 

 Amia, 590 

 Amino-acids, 444 

 Amitosis, 51, 694 

 Ammocoete, 543 

 Ammonia, 122, 166, 211, 279, 291 



727 



