LIST OF ILLUSTRATIONS x j x 



FIGURE ' PAGE 



298. From the lung of a child 315 



299. From the lung of a dog whose blood vessels had been injected with 



a gelatinous mass, and appear black . . . . .316 



300. From the central portion of figure 299 317 



301. From a section through the lip of an infant . . . .321 



302. Axial section of a human molar tooth 322 



303. Diagram of an axial ground section of tooth, showing the several 



stripes of the clentin and the enamel 323 



304. From a longitudinal section of the neck of a child's tooth and the 



adjacent alveolus 324 



305. From a section of a human tooth which had been ground to extreme 



thinness .......... 325 



306. Section of fang parallel to the dentinal tubules, human canine . 326 

 307. Dentin from a ground section of a human mclar, showing the den- 

 tinal tubules cut across 327 



308. Enamel prisms in transection 328 



309. A group of enamel prisms cut longitudinally, from the incisor tooth 



of the rat, showing their irregularly beaded character and the cross 



striations .......... 329 



310. From a section of a human tooth which had been ground to extreme 



thinness 330 



311. Developing tooth from a human embryo 17 mm. long . . 331 



312. Dental anlages from a human fetus 40 mm. long . . . 332 

 313. Two stages in the early development of the teeth, from a 25 mm. pig 



embryo 332 



314. Developing tooth from a human fetus 30 cm. long . . . 333 



315. A developing tooth from an infant's jaw . . . . . 334 



316. A portion of Fig. 315, near the apex of the developing tooth . 335 



317. Odonto blasts and dentin of the tooth of a new-born cat . . 336 

 318. View of dorsum of tongue, showing the various papillae, the tonsils 



and the fauces . . . 338 



319. One lateral half of a coronal section of a dog's tongue . . . 339 



320. Filiform papilla? of the dog's tongue ...... 340 



321. A filiform and a fungiform papilla, from an injected specimen of 



tongue of cat 341 



322. Circumvallate papillae of the human tongue .... 342 

 323. Two foliate papillae from a rabbit's tongue, showing numerous 



taste buds along their lateral margins 343 



324. Diagram of the alimentary canal of man 345 



325. Surface view of Auerbach's intramuscular nerve plexus, from the 



esophagus of a cat ........ 346 



326. Longitudinal section through region of transition from esophagus 



(right) to cardiac end of stomach (left) ..... 349 



