INDEX 437 



Secondary quills : Pigeon, 386 



Section, transverse : Hydra, 23-24, Leech, 49-54 ; Earthworm, 70-74 ; Mussel, 96-101 ; 



Amphioxus, 182-193 

 Segment : Leech, 36 

 Segmental organ, see Nephridia 



Segmentation : Leech, 36 : Earthworm,, 55 ; Crayfish, 124 ; Cockroach, 152 

 Segmentation of skull : Rabbit, 267 

 Sella turcica : Rabbit, 269 



Semicircular canal : Dog-fish, 204, 254-255 ; Pigeon, 416 

 Seminal funnel : Earthworm, 67-68 

 Sense-capsules : Dog-fish, 201 ; Rabbit, 271-276 

 Sense-organs : Leech, 49 ; Mussel, 93 ; Snail, 120 ; Crayfish, 146-150 ; Cockroach, 166 : 



Amphioxus, 181 ; Dog-fish, 252-256 ; /fyeon, 412-416 

 Septum : Earthworm, 58, 73 ; Amphioxus, 172 

 Septum auricularum : Pigeon, 404-405 

 Septum, interorbital : Fowl, 363, 368 

 Septum lucidum : Rabbit, 348 

 Septum narium : Dogfish, 203 ; Rabbit, 282 

 Sesamoid bone : Rabbit, 257 

 Setse -..Earthworm, 56, 57, 72 

 Shell : Mussel, 76-79 ; Snail, 102, 105-106 

 Shell-gland : Liver-fluke, 30 

 Sinus, blood : Leech, 42-43, 53 ; Snail, 123 ; Crayfish, 137 



anterior cardinal : Dog-fish, 223 



coronary : Dog-fish, 233 



Cuvierian : Dog-fish, 223 



genital : Dog-fish, 225 



hepatic : 'Dog-fish, 221 



hyoidean : Dog-fish, 224 



inferior jugular : Dog-fish, 223 



inter-orbital : Dog-fish, 224 



orbital : Dog-fish, 205, 224 



posterior cardinal : Dog-fish, 224 



post-orbital : Dog-fish, 224 



'venosus : Dog-fish, 220, 233 

 Sinus, genital : Liver-fluke. 31 



urinary : Dog-fish, 236 



uriuo-genital : Dog-fish, 237, 238 

 Skate, 194 

 Skeleton : Amphioxus, 171-172, 182-183 ; Dog-fish, 198-212 ; flafc&tf, 257-294 ; /'owZ, 



355-382 



Skeleton, appendicular : Rabbit, 285-294 ; Fowl, 374-382 

 axial : Rabbit, 259-283 ; Fowl, 355-374 

 branchial : Amphioxus, 172 

 buccal : Amphioxus, 171, 183 

 endophragmal : Crayfish, 145 

 of fins : Amphioxus, 171, 183 ; Dog-fish, 211, 212 

 mammalian, 258 

 visceral : Dog-fish, 207-211 

 Skin, see Integument 



Skull : Dog-fish, 201-207 ; Rabbit, 267-283 ; Fowl, 363-374 



SNAIL, 103-123 ; external characters, 102-107 ; mantle cavity, 107-111 ; digestive 

 system, 113-115 ; reproductive system, 115-118; nervous system, 118-119 ; 

 sense-organs, 120 ; buccal mass, 120-121 ; circulatory system, 121-123 

 Somite : Leech, 36 



Spermatheca : Earthworm, 66, 68 ; Snail, 118 ; Cockroach, 167 

 Spermatoblast : Earthworm, 69 

 Spermatophore : Leech, 48 ; Snail, 117 

 Spermatospore : Earthworm, 69 

 Spermatozoa : Hydra, 21; Leech, 47, 54 ; Earthworm, 68, 69 ; <Snat7, 116 ; Crayfish, 140 ; 



Amphioxus, 182 



Sphenoidal fissure : Rabbit, 269 

 Spinal cord : Amphioxus, 179, 184 ; Dog-fish, 251-252 

 Spinous process, see Vertebra 

 Spiracle : Cockroach, 156 ; Dog-fish, 196 

 Spiral valve : Dog-fish, 215 

 Spleen : Dog-fish, 213 ; Rabbit, 304 ; Pigeon, 395 

 Splenial : Fowl, 373 

 Sporocyst, 32 



