1018 



ANALYTICAL INDEX. 



(continued). 



genus Phalangista, 262 

 Petaurus, 263 

 Phascolarctus, 265 

 tribe IV. Poephaga, 265 



genus Hypsiprymnus, 265 

 Macropus, 266 

 tribe V. Rhizophaga, 267 



genus Phascolomys, 267 

 osteology of the Marsupialia, 263 

 the skull, 268 



composition of the cranium, 269 

 occipital bone, 269 

 temporal, 269 

 sphenoid, 271 

 parietal, 272 

 frontal, 272 

 lachrymal, 272 

 nasal, 272 

 intermaxillary, 272 

 superior maxillary, 273 



perforations of the bony palate, 273 

 cavity of the cranium, 274 

 inferior maxilla, 975 



of the Phascolotherium and Tliylacotherium, 



275 



vertebral column, 276 

 cervical vertebra;, 276 

 dorsal, 277 

 lumbar, 279 

 sacrum, 278 

 caudal vertebra, 278 

 thorax, 2SO 

 ribs, 2?0 

 sternum, 2so 

 pectoral extremities, 280 

 scapula, 2SO 

 clavicle, 281 

 humerus, 281 

 bones of the fore-arm, 28 1 

 carpus, 2S2 

 metacarpus, 282 

 phalanges, 282 

 pelvic extremities, 282 

 os innominatum, 2S3 

 marsupial bones, 23 

 femur, 284 

 patella, 284 

 tibia, 284 

 fibula, 235 

 tarsus, 285 

 metatarsus, 286 

 myology, 287 



abdominal muscles in'a male Fhalanger, 287 

 external oblique, 287 

 internal oblique, 2SS 

 transversalis abdominis, 2S8 

 pyramidalis, 28 

 cremaster, 288 

 muscles of the pectoral extremity in Perameles 



lagotis, 289 

 trapezius, 289 

 latissimus dorsi, 289 

 omo-anconeus, 289 

 serratus magnus, 289 

 supra-spinatus, 289 

 deltoides, 289 

 subscapularis, 289 

 teres major, 289 

 triceps extensor, 289 

 pectoralis major, 489 

 biceps, 289 

 pronator teres, 290 

 flexor carpi ulnaris and radialis, flexor subli- 



mis digitorum, 290 

 flexor profundus, 290 

 pronator quadratus, 290 

 supinator longus, 290 

 muscles of the pelvic extremity, 290 



in the Kangaroo; sartorius, &c., 290 



inaDasyure; sartorius and glutei, 290 



in Perameles lagotis; sartorius, rectus femo- 



ris, and biceps flexor cruris, 290 

 in Dasyurus macrurus; planlaris, soleus, tibi- 

 alis posticus, flexor longus pollicis, flexor 

 communis digitorum, 290 

 in Phalangista vulpinea; muscles of the ante- 

 rior part of the leg, 291 

 in Perameles lagotis j gastrocnemius, soleus, 



and plantaris, 291 

 nervous system, 291 

 brain, 291 

 spinal cord, 295 

 organs of sense, 296 

 digestive system, 297 

 mouth, 297 

 lips, 297 



masticatory muscles, 297 

 teeth, 298 

 cheek pouches, 299 

 fauces, 299 

 alimentary canal, 2P9 



sebaceous follicles of the rectum, 30} 



Marsupialia (continued). 



proper sphincter of the anus, 303 



table of the length of the intestinal canal, in a 



few species, 304 

 salivary glands, 304 

 tonsils, 304 

 liver, 304 

 pancreas, 305 

 spleen, 305 

 absorbents, 305 

 blood, 305 

 heart, 306 

 arteries, 307 

 veins, 308 



respiratory organs, SOf) 

 trachea! rings, 309 

 thyroid glands, 310 

 larynx, 310 



epiglottis, 310 

 thyroid cartilage, 310 

 kidney, 310 

 supra-renal glands, 310 

 urelers and bladder, 310 

 male organs of generation, 310 

 testes, 310 

 vasa dcferentia, 311 

 vesiculae seminales, 311 

 membranous and prostatic portion of the urethra, 



311 



Cowper's glands, 311 

 penis, 311 

 spermatozoa, 312 

 erectores penis, 312 

 retractor penis, 31-2 

 levator penis, 313 

 sphincter cloacae, 313 

 female organs, 313 

 ovaries, S13 

 (review of the female generative organs in other 



groups of vertebrate animals, 1 ) 316 

 uteri and vaginae in various species, 316 

 arrangement of the vaginal rugae, &c., 317 

 purposes answered by the different forms of the 



generative organs of marsupial females, 317 

 gelatino-mucous secretion in the vagina, 313 

 clitoris, 318 

 developement of Marsupialia, 318 



review of the different opinions which have been 



expressed on the subject, 318 

 experiment performed witli a view to ascertain the 

 period of uterine gestation, the structure of the 

 fetal envelopes, the conditions of the new-born 

 young, c. in the Kangaroo, 321 

 ovarian ovum, 323 



examination and dissection of an embryo Kangaroo 



at about the twentieth day of utero-gestation, 323 



condition of the foetus of the Kangaroo at a later stage 



of uterine devslopement, 325 

 new-born fetus of the Kangaroo, 325 

 new-born fetus of Didelphys Virginiana, and subse- 

 quent growth of the young, 325 

 condition of the young of Kangaroo whilst in the 



marsupium, 325 



relative size of the brain of the embryo Kangaroo 



compared with that of the embryo of the sheep, 1-26 



traces of the umbilical vessels, urachus, &c. in the 



mammary fetus of Kangaroo, 326 

 dissection of a small mammary fetus of Kangaroo, 326 

 larynx of the mammary fetus of Kangaroo, 327 

 maturation of the mammary foetus, 3.7 

 mammary organs, 327 

 marsupium, 327 

 observations on the claims of the Marsupialia to 



be regarded as a natural group of animals, 328 

 table of classification of the Marsupialia, 330 

 Membrane, 331 

 AJeninges, 331 

 Microscope, 331 



I. Optical principles governing the construction of 

 miiroscopes, 331 

 influence of convex and concave lenses on the rays 



of light passing through them, 331 

 spherical aberration, 334 

 correction, 334 

 Herschel's doublet, 335 

 chromatic aberration, 335 



correction, 3.15 

 simple microscope, 336 



(phenomena of ordinary vision), 337 



convex Itns, 337 



Dr. Brewster's lens of diamond, sapphire, or 



carbuncle, 337 



Dr. Wollaston's doublet, 338 

 (angle of aperture), 338 

 Coddington lens, 339 

 Stanhope lens, 339 

 compound microscope, 339 

 field glass, 340 

 Huyghenian eye-piece, 341 

 Mr. Holland's doublet microscope, 342 

 eye-pieces intended to increase the fielil, 3-1C 

 achromatic combinations, method of varying 

 the magnifying power, 343 



