xii < >NTENTS. 



PACE 



K-, d description and development) . 181 



of Fl.hr.s 184 



of Amphibians ... ' Vl " 



of Krptilcs and Bilds . 186 



of Mammals ... 188 



K.-tina . . 189 



Accessory Organs in Connection with the Eyi . I'.'l 



a. Eye-Mu-rlrs ...... l'.l 



6. Fvelids I'.'l 



c. Glands . . 192 



Bibliography ........ 194 



AUDITUIIY ORGAN (general description and development) 



of Fishes ..... 198 



of Amphibians ..... 



of Reptiles and Biuls 199 



of Mammals ....... 201 



Histology of the Mammalian Cochlea . . 



Relation of the Auditory Organ to the Air-Bladder in Fi>ln s 207 



Bibliography ............ -"' 



F. ORGANS OF NUTRITION 



AUMF.NTAUY CANAL AND ITS Al'l'KXDACKS (-m.-ral description) 208 



I. Mnn .......... -1- 



Teeth (general description) . . . 



of Fishes and Ainpliil-ians . . 



of Rcptil.-s .... 215 



of Mammals .... 216 



elands of the Mouth . . '-'-" 



o-f Amphibians . . 



of Reptiles ... 221 



,,M!inls . . . 



of Mammals . . 

 Tongue . . . 

 Thyroid Claud 

 Thy urns Cland . 226 



OOB 



II. U>"|-|| Mil B, M'>M.\ II, AMI IN'IKSTINK . 



of Fisln-s and Amjiliibians 



of i:,-i.til.-s 



of Birds . 



of Mammals . . 



lli.stol.'.u'.v of thr MUCOUS Mrmbran.- of tlir Alinifiitary Canal 

 \ITIM.\I.IS i.r TIM: AI.IMIMAUV OANA1 



l.iv,, 



Pancreou 243 



. -Ji:; 

 Bibliography 



