Xll CONTENTS. 



PART II. 



X. CHOEDATA. (tUNICATES OR SEA-SQUIRTS ASD AJIPHI- 



oxus = acrania) . . . 307 



XI. chordata — Vontiuued. the characters of craniote 



OR VERTEBRATE ANIMALS . 311 



XII. THE STRUCTURE OF THE HORSE 315 



XIII. CLASSIFICATION OF THE CRANIOTA. A. THE ICHTHYOP- 



siDA. (fish and amphibia) 3."i1 



XIV. B. SAUBOPSI0A. (i. reptiles) 360 

 XV. B. SAUROPSIDA — Continued, (n. avek) . . 3(j."> 



XVI. BRITISH BIRDS 377 



X\'II. K5IBRY0L0GY OF THE CHICK (THE FOG OP THE FOWL) 431 



XVIII. MAMMALIA (dEVELOPIIEXT AND FCBTAL JIEMBRANES) 448 



XIX. MAJi.MALiA — Vontinned. classification of maiimals. 



BKITISH mammals (dCiMESTIC AND WILD) 460 



APPENBK 'E8. 



I. THE prevention AND TREATMENT (iF VERMICEOUS 



PESTS . ,-,05 



II. THE PREVENTION AND DESTRUCTION OF INSECT PESTS ."llO 



.520 



