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INDEX 



Ammonites, 285 

 Amnion, 655 

 false, 655, 668 

 of bird, 655 

 of mammal, 666, 668 

 of man, 668 



origin of, in embryo, 650 

 Amniota, 549 

 Amceha, 26, 79, 80 

 discoides, 26, 32 

 leschercB, 26, 27 

 Umax, 28 

 proteus, 26, 28 



binary fission in, 34 



depression in, 31 



encystment of, 34 



excretion in, 30 



irritability, automatism, and 



conductivity in, 29 

 movements of, 26 

 multiple fission in, 35 

 nutrition of, 29 

 reproduction of, 34 

 respiration of, 30 

 spore formation in, 35 

 Amoebae, multinucleate, 26 

 Amoebina, 80 

 Amoebocytes, 84, 163, 291, 293, 



304, 514, 524 

 Amoeboid movement, 28 

 Amoebulae, 45 

 Amphibia, 547, 551 

 Amphidasis, 710 

 Amphineura, 283 

 Amphioxus, 299. See Lancelet 

 Amphiplat3^an, 423 

 Amphistylic, 583 

 Amplexus, 381 

 Ampullae of frog's ear, 390 



of tube feet, 292 

 Amylase, 276, 444 

 Anahas, 592 

 Anabolism, 14 

 Anaemia, 140, 143 

 Anaerobic organisms, 11, 154 

 Anal cerci, of cockroach, 230 



cirri, of Nereis, 171 

 Anaphase, 689, 694 

 Anapophysis, 424 

 Anapsid, 578 

 Anaspida, 551 

 Anatomy, definition of, 24 

 Ancylostoma duodenale, 143 

 Andalusian fowl, 683 

 Anemones, sea-, 115 

 Anguillula aceti, 141 

 Anguilhdina tritici, 141 

 Anguis fragilis, 550, 556 



Angular process, 430 



Animal pole, 620 



Animals, difference between plant 



and, 19 

 Anisogamy, 39 

 Ankle, 418. See tarsus 

 Annelida, 157, 1S3 

 Annuli of leech, 179 

 Annulus of Vieussens, 388 

 Anodonta, 270, See also Mussel, 



swan 

 Anomapsid, 579 

 Anopheles, 76, 148 

 Anopleura, 253 

 Ansa subclavia, 388 

 Ant-eaters, 496 

 Antebrachium, 418 

 Antedon rosacea, 298 

 Antennae of cockroach, 228, 230 



of crayfish, 197, 199 

 Antennary glands, 210 

 Antennule of crayfish, 197, 199, 



215 



Antibodies, 67, 151 



Anticoagulants, 74, 182 

 Anti-enzymes, 155 

 Antigens, 151 

 Antitoxins, 151 

 Antlers, 492 

 Ants, 147, 260, 263 

 Anura, 549, 561, 581 

 Anus of Ascaris, 135 

 of cockroach, 230 

 of crayfish, 195 

 of dogfish, 312 

 of earthworm, 159 

 of frog, 348 

 of lancelet, 300 

 of Nyctotherus, 60 

 of pigeon, 393 

 of rabbit, 418 

 of snail, 264 

 of starfish, 288 

 of swan mussel, 276 

 of Vorticella, 58 

 temporary, of Paramecium, 49 

 Aorta, anterior and posterior, of 

 cockroach, 235 

 of swan mussel, 279 

 branchial, of lancelet, 306 

 dorsal, of lancelet, 306 

 of chick, 659 

 of dogfish, 328 

 of frog, 373 

 of pigeon, 410 

 of rabbit, 449 

 of vertebrates, 596 

 Aorta, ventral, of dogfish, 325 



