CONij!ji«j.is. 



PART II. 



X. CHORDATA. (TUNICATBS OR SEA-SQDIBTS AND AMPHI- 



oxds=aceania) ..... 277 



XI. CHORDATA — Continued, the charactbrs op oraniotb 



OR vertebrate animals . . . .281 



XII. THE STRUCTURE OP THE HORSE .... 285 



XIII. CLASSIPICATION OP THE CRANIOTA. A. THE ICHTHYOP- 



SIDA. (pish AND AMPHIBIA) . . . .321 



XIV. B. SAUROPSIDA. (l. REPTILES) .... 330 



XV. B. SAUROPSIDA — Continued, (il. aves) . . . 335 



XVI. BRITISH BIRDS ...... 353 



XVn. EMBRYOLOGY OP THE CHICK (tHE BG& OP THE FOWL) 407 

 XVIIL MAMMALIA (DEVELOPMENT AND F(ETAL MEMBRANES) . 424 



XIX. MAMMALIA — Continued, classification op mammals. 



BRITISH MAMMALS (DOMESTIC AND WILD) . . 436 



APPENDIX. 



I. THE PREVENTION AND TREATMENT OP VBRMICEOUS 



PESTS ..... J^ . 481 



II. THE PREVENTION AND DESTRUCTION OP INSECT PESTS . 486 



. 497 



