INDEX 



(The numbers in italics refer to practical directions.} 



Abdomen, abdominal cavity, 20, 



361, 434, 483, 506 

 Abdominal pore, 432 

 Abiogenesis, 288 

 Acanthias, 431, 4^9 

 Acetabulum, 50, 503 

 Aciculum, 352 

 Acoustic spots. 1 88 

 Acrania, 421 

 Acromion, 500 

 Adaptation, 225 

 Adenoids (lymphatic glands), 



507. 515 



Adrenal bodies, 145, 447, 538 



Agamobium, 321 



Albumen, of bird's egg, 566 



Alimentary canal, see Enteric 

 canal 



Allantois., 609, 610 



Allolobophora, see Earth- 

 worm 



Alternation of generations, 321 



Alveoli of jaws, 510 



Amnion, 606, 610 



AMCEBA : occurrence and gene- 

 ral characters, 229 ; move- 

 ments, 232 ; resting condi- 

 tion, 232 ; nutrition, 233 ; 

 growth, 234 ; excretion, 235 ; 

 respiration, 235 ; metabol- 

 ism, 236 ; reproduction, 236 ; 

 immortality, 236 ; conjuga- 

 tion, 237 ; death, 237 ; ani- 

 mal or plant ? 255 ; practical 

 directions, 238 



Amoeboid movements, 106, 231 



Amphibia, 219, 418, 482 



Amphiccelous, 439 



PRACT. ZOOL. B. D. 619 



AMPHIOXUS, see Lancelet 



Ampulla, of semicircular canals, 

 188 



Ampulla, of sensory canals of the 

 integument, 464 



Anal segment, 327, 352 



Analogous, analogy, 217 



Anatomy, 217 



Angular process of mandible, 496 



Animals and Plants : compari- 

 son of typical forms, 255 ; 

 discussion of doubtful forms, 

 2 55, 257; boundaries artificial, 



258 



Ankle, see Tarsus 



Annulata, 220, 349 



Anodonta, see Mussel 



Anopheles, 287 



Antenna, 366 



Antennary gland, 375 



Antennule, 366 



Anura, 219 



Anus, 6, 267, 272, 327, 352, 371, 

 401, 418, 426, 432, 486, 514 



Aorta, aortic arches, see Arte- 

 ries 



Aperture, or apertures (see also 

 Foramen, and under Nephri- 

 dium, Kidney, Pores, Repro- 

 ductive organs, &c.), auditory : 

 Crayfish, 381 ; Rabbit, 486, 

 492, 536 ; cloacal, see anus ; 

 exhalant and inhalant, 397 



Aphis, 570 



Appendages, lateral, and their 

 skeleton : Frog, 5, 29, 36, 48, 

 51 ; Crayfish, 360, 363 ; Dog- 

 fish, 433, 441 ; Rabbit, 501, 

 503 ; development of, in 

 Vetebrates, 606 



