xx 1. 1ST OF WOODCUTS. 



M... 



15 I 'i LI mi "I I Horizontal Section through tla- Kight Human E\--. S.-,-n 



from above.) 188 



153. Eye of a T.-1.. -Km 1-:. 



151. Eye of Xoeerto muroZu, showing the Ring of Bony Sclerotic Platea . . . 187 



155. Eye of au Owl 187 



i;.-j. K.-tina. (After Merkcl.) 189 



l.~7. llarderian <Jlaud (//, //') and Lacrymal Gland (Th) of An<juUsjrit<jiliii . . 193 



158. Diagrammatic Tniu-vn.-e Vertical Section through the Eye uf a Mammal . 193 



i.'L 1 . Diagram of the Lacrymal Apparatus of Man I'.u 



160. Head and Anterior Portion of Body of a Chick. (In part after Moldeu- 



liatiL-r.) 195 



I'll. Bemidiagrammatic Figure of the Auditory Organ of a Teleostcau. (Modi- 

 lied from a figure of that of MU, milln by llas.se.) 196 



162. Longitudinal Section of an Ampulla of Gobius. (After Hensen.) . . . H'7 



163. Membranous Labyrinth of iocerta. (From the outer .side.) (After C. Hasse.) 200 



164. Membranous Labyrinth of the Crocodile. (From the outer side.) (After 



C. II ;-.-.. 200 



165. Membranous Labyrinth of the Pigeon. (After C. Hasse.) 2ol 



166. Membranous Labyrinth of the Ox. (AfterC.Has.se.) 201 



lt;7. Diagram of the Entire Auditory Organ of Muii 203 



168. Bony Cochlea of Man. (After A. F.eker.) 204 



169. 1 >i -i Mum i; i> Transverse Section of the Cochlea of a Mammal 204 



170. The Organ <.f Coiti. (After Lav.l..\v.sky.) ^"o 



171. Diagrams of tlie Oral Cavities of a Fish (\j, Ami>hil'ian I'. >, K ^tile i>r 



l;nd(('), and Man (D) 210 



172. Diagram of the Entire Alimentary Tract of Man 211 



17:;. Semidiagrammatic Figure of a Longitudinal Section through a Tooth . . 213 



174. Skull of Batraehoseps <> n < iiiialtiy. (From the ventral side, showing the 



terth (iii tli-- parasphenoid.) _ 214 



175. A, Jiiagrams of Trans vi i-.- Suctions through the .laws nl' K. ptil.s, showing 



Pleurodont (a), Acrodont (6), and Thecodont (c) Dentitions. IJ. , Lower 



Jaw of y.Hiiloi-ii i -ii-ijiurn ; b, of AH\<< ','>-. (After Le\dig. ) . . . 215 



176. PigOieB of the Poison Fangs of a Yip. -i-ine Snake 216 



177. Dentition of the ll,-.l-,-hog (E, ,). (Tlie t.etli of Koth 



jaws from the M'le, and tlio.-e of the upper jaw from lielow.) 217 



178. Dentition of the Dog (Ciinis/omiZiarM) 21.H 



17 1 .'. Dentitionof the Porcupine (fi > 218 



IMI. Dentition c.f SI, 219 



1-1. Dentition of a Catarrhine Monki 219 



i--j. The Poison- Apparatus of the Battlesuake -j-ji 



, II. :'l iif .\ , \Sltll the Tollglle extended 223 



A, Tongue, llyoid A|i|iaratns, and I'.ronehi of ' . : rii>i]ll,i,-t . 

 /.sj ; \\, 'I'oiigii.- of Lactrta; (', of .!/.,<.'// im/i,-iis; D, of K,^ 



'2-1 



i-:.. Thymus and Thyroid of a Yi - ak 227 



186. Int.- timl Tia. t o| :i Shark . 229 



