Abdominal aorta, 284 
pores, 124, 322 
ribs, 41 
sternum, 57 
vein, 289 
vertebra, 49 
Abducens nerve, 170 
Abomasum, 227 
Accessory nerve, 177 
Acetabular bone, 112, 113 
Acetabulum, 104, 109 
Acinous glands, 18 
Acrodont, 88, 213 
dentition, 213 
Acromion process, 109 
Actinotrichia, 103 
Activators, 264, 353 
Acustico-lateralis nerves, 167 
Acustic nerve, 174 
Adductor muscles, 132 
Adenoid tissue, 307 
Adipose tissue, 22 
Adrenalin, 353 
Adrenal organs, 352 
Advehent vein, 291 
AEgithognathous, 97 
Afferent branchial artery, 274 
duct of gills, 239 
nerve root, 161 
Air-bladder, 247 
ducts, 251 
sacs, 261 
‘Ala orbitalis, 98 
temporalis, 61, 98 
Alimentary canal, 205 
Alisphenoid, 67 
cartilage, 61 
Allantoic arteries, 278, 285, 293 
bladder, 318 
veins, 350 
Allantois, 264, 278, 350 
Alveolar ducts, 256 
Alveoli of jaws, 213 
of lung, 256 
Amnion, 350 
Amniotes, copulatory organs, 344 
development of heart. 271 
Amniotic cavity, 350 
Amphibia, brain, 155 
circulation, 295 
dermal skeleton, 41 
excretory organs, 327 . 
gills, 242 
INDEX. 
Amphibia, girdles, 106, 110 
glands, 29 
intestine, 229 
larynx, 251 ; 
lateral line organs, 180 
limbs, 118 
lungless, 258 
lungs, 257 
reproductive organs, 333 
skin, 29 
skull, 82 
teeth, 212 
thymus, 246 
thyreoid, 247 
tongue, 217 
vertebral column, 51 
Amphiccelous, 46 
Amphiplatyan, 46 
Amphiohinal, 191 
Amphistylic, 73 
Ampulle of ear, 184 
of Lorenzini, 182 
of Savi, 182 
Amylopsin, 234 
Anchylosis, 38 
Angulare, 71 
Anlage, vi. 
Antibrachium, 116 
Anterior abdominal vein, 289 
cardinal vein, 279 
cephalic duct, 303 
chamber of eye, 203 
cornua, 139 
process, 74 
vena cava, 300 
Anthers, ror 
Antrum of Highmore, 197 
Aorta, 273, 284 
Aortic arches, 273 
arches, modifications of, 282 
Aponeurosis, 129 
Appendages, 102, 114 
Appendicular skeleton, 102 
Apteria, 32 
Aqueduct, 143 
Aqueous humor, 203 
Arachnoid membrane, 152 
Arbor vite, 161 
Arcades, 11 
Archenteron, 9 
Archiccele, 8 
Archinepteric duct, 312 
Archipterygium, 115 
385 
