480 INDEX. 



Nerve-ganglion, coeliaG ; EahUt, 332, 872 



frontal ; Coekroeuili, 175 



mesenteric : RaMU, 332, 372 



optic : Crayfish^ 158 



parieto-splanclinic, see Visceral 



pedal : Mussel, 99 ; Snail, 127 



post-oesopliageal : Crayfish, 156 ; Cockroach, 174 



pre-(KSopliageal : Crayfish, 155 ; Cockroach, 174 



sub-OBSophageal : Leech, 62 ; Snail, 126 ; Cockroach, 174 



siipra-oesopliageal : Leech, 52; Earthworm, 76 ; Snail, 126 ; Cockroach, 17J 



visceral : Mussel, 100, 108 



viscero-pleural : Snail, 127 

 Nerve-roots, cranial : Dog-fish, 267-274 ; Rabbit, 384^385 



spinal : Amphioxus, 191-192, 198, 200 ; Dog-fish, 278 

 Nervous system : Hydra, 20, 24 ; Livcr-fiuke, 33 ; Leech, 61, 58 ; Earthworm, 75, 80 ; 

 Mussel, 99 ; Snail, 126 ; Crayfish, 155 ; Cockroach, 173-176 ; Amphi- 

 oxus, 190, 198, 200 ; Dog-fish, 263 ; iJa!i6l(, 363, 370, 378 ; JHgeon, 452 

 Neural arch : Dog-fish, 216 ; «ee also Vei-tebra 

 Nexural canal, see Vertebra 

 Neural plate : Dog-fish, 216 

 Neural process : Dog-fish, 216 

 Nexural spine : Dog-fislt, 217 ; see also Vertebra 

 Nictitating membrane : Rabbit, 327 ; Pigeon, 425, 454, 455 

 Nose, see Olfactory organ 



Nostril : Dog-fish, 212 ; Rabbit, 326 ; Pigeon, 428 

 Notochorfl : Amphioxus, 182, 195, 198, 199 ; Dog-flih, 214, 215, 225 

 Nucleolus, see Paranucleus 

 Nucleus : Ammba, 3 ; Paramecium, 6 : Opalina, 8 ; Vorlicclla, 11 ; Snail-shell, 112 



Oblique septum : Pigeon, 434 



Occipital condyle : Dog-fish, 225 ; Rabbit, 296 ; i^owZ, 406 

 Occipital segment : Rabbit, 296 

 Odontoid process : Rabbit, 289 ; Fowl, 400 

 Odontopbore : Snail, 121, 128 

 CEsophageal pouohes : Earthworm, 65 



(Esophagus: Liver-Jluke, ^0 ; Leech, 4A ; Earthworm, W", ; Mnssel, -M)] ; 5'//.(k7, 121 ; Cray- 

 fish, 162 ; Cockroach, 171 ; Dog-fish, 2;) 1 : /irt(<i>«, 339 ; 7'i</TO«, 435 

 Olecranon process : Rabbit, 316 ; Fowl, 418 

 Olfactory capsule ; Dog-fish, 219 ; Rabbit, 300 ; /'oirt, 410 

 Olfactory lobe : Dog-fish, 266 ; Rabbit, 380, 381 ; Pigeon, 153 

 Olfactory orgau : Crayfish, 159 ; Amphioxus, 193 ; Dog-Jlsh, 278 

 Omentum : Rabbit, 332 ; Pigeon, 434 

 Opalina, 7-8 

 Opisthotic : /eaiiitY, 301 



Optic chiasma : Dog-fish, 275 ; Rabbit, 382, 393 ; Pigeon, 453 

 Optic foramen : Dog-fish, 221 ; Rabbit, 308 ; Fow!, 409 

 Optic lobe : Dog-fish, 266, 277 ; 7!aSW(, 380, 394 ; Pigeon, 453 

 Optic thalamus : Rabbit, 889 

 Optic tract : Rabbit, 382, 389 

 Oral groove r Paramecium, 6 

 Orbit : Dog-fish, 221-223, 266 ; Fowl, 409 

 Orbito-sphenoid: Rabbit, 2SS; Fowl,iO^ 

 Os inuominatum : Rabbit, 320 ; Fowl, 420 

 Os orDiculare : Rabbit, 304 



Ossicle, auditory : Rabbit, 803 ; ^owZ, 408, 416 ; Pigeon, 457 

 Ossicles of stomach : Crayfish, 163 

 Otooyst : Mussel, 100 ; Snail, 127 

 Ovarian duct : Liver-fluke, 32 

 Ovary; Hydra, 22-28; Liver-fluke, 32; iecc/i, 51; Earthworm, 70, 74; Mussel, 102; 



Crayfish, 161 ; Cockroach, 176 ; Amphioxus, 193, 196-196, 206 ; Dog-fish, 233, 



265 ; Rabbit, 369 ; Pigeon, 451 

 Oviduct: Liver-fluke, 83; Leech, 61 ; Earthworm, 70; Snail, 126; Crayfish, 161; CocA- 



j-oac/i, 177 ; Dog-fish, 266 ; SaMM, 369 ; Pigeon, 461 

 Ovum : Hydra, 23 ; Liver-fluke, 36 ; Eai'thworm, 74 ; Mussel, 102 ; iS»iai7, 123 ; Cockroach, 176 ; 



Amphioxus, 194 ; Dog-fish, 210, 266 ; Rabbit, 326, 369 ; ^iri, 424 ; Pigeon, 462 



Palatal process ; iZa&&^f, 305 



Palate : ;ea*M(, 373 



Palatine bone : iJaiiiiif, 804 ; /'owi, 411 



