XV111 LIST OF ILLUSTRATIONS. 



FIG. 



261. Diagrammatic section of spinal cord 



262. Diagram of spinal cord of man, thoracic region after John- 



ston ....... 



263. Diagram showing the ear and related parts in a young cat . 



264. Diagram of the eye ...... 



265. Development of the eye after Balfour and Hertwig 



266. Origin of lungs, liver, and pancreas in the chick after 



Goette ....... 



267. Section through a young newt .... 



268. Blood corpuscles of Vertebrates .... 



269. Diagram of circulation after Leunis 



270. Development of excretory system of Vertebrate in pnrt 



after Boveri ...... 



271. Urogenital system ...... 



272. Mammalian ovum after Hertwig .... 



273. Median longitudinal section of anterior end of Myxine 



after Retzius and Parker .... 



274. Respiratory system of hag, from ventral surface 



275. Bdellostoma stouti (Californian hag), enveloped in sheath of 



mucus after Bashford Dean 



276. The lamprey (Petromyzon marinus) 



277. Longitudinal vertical section of anterior end of larval 



lamprey after Balfour ..... 



278. Restored skeleton of Palceospondyhis gtinni after Traquair 



279. Pterichthys milleri. Lateral view restored by Traquair 



280. Under surface of skull and arches of skate after W. K. 



Parker ....... 



281. Side view of skate's skull after W. K. Parker 



282. Skeleton of skate from a preparation 



283. Dissection of nerves of skate .... 



284. Side view of chief cranial nerves of Elasmobranchs slightly 



modified from Cossar Ewart .... 



285. Spiral valve of skate after T. J. Parker 



286. Upper part of the dorsal aorta in the skate after Monro 



287. Heart and adjacent vessels of skate in part after Monro 



288. Urogenital organs of male skate .... 



289. Urogenital organs of female skate in part after Monro 



290. Elasmobranch development after Balfour . 



291. Embryo dogfish in egg-case ("Mermaid's purse") which 



has been cut open to show contents 



292. The haddock 



293. External characters of a Teleostean a carp (Cyprinus 



carpio] after Leunis . . . . 



294. Caudal vertebra of haddock ..... 



295. Disarticulated skull of cod from Edinburgh Museum of 



Science and Art . 



296. Pectoral girdle and fin of cod from Edinburgh Museum of 



Science and Art ..... 



297. Diagram of a Teleostean gill in section 



298. Diagram of Teleostean circulation after Nuhn . . 



