LIST OF ILLUSTRATIONS. 



NO. PAGB 



142. Transverse section of Hair from Turkey's beard, . . Original, 87 



143. Hair of Stag, longitudinal, do. 



144. Hair of Wapeti Deer, longitudinal, . . . .--*-< do. 



145. Hair of Goat, longitudinal, . . . . do. 



146. Hair of Ornithorhyncus paradoxus, .... -i-'* do. 



147. Structure of the narrow portion magnified, .... do. 89 



148. Structure of the enlarged portion, do. 



149. Transverse section, Porcupine's quill, do. 



150. Transverse section, quill of English Hedgehog, ... do. 90 



151. Longitudinal section, quill of English Hegehog, ... do. 90 



152. Transverse section, quill of the American Porcupine, . . do. 90 



153. Hair of Seal, longitudinal, P-p do. 



154. Mouse hair, longitudinal, M do. 91 



155. Shaft and bulb of the hair, Phascogale penicillata, . .a i -j * do. 91 



156. Succeeding portion, do. 



157. Greatest enlargement of the same hair, do. 91 



158. Hair of Indian Bat, **i do. 91 



159. Hair of Aphrodita hispida, latfNjj**- * do. 92 



160. Hair of larva of Dermestes lardarius, . . . . *4*<;; do. 92 



161. Hair of larva of Dermestes lardarius enlarged, 500 diameters, . do. 92 



162. Pavement epithelium, ........ do. 94 



163. Ciliated epithelium, do. 95 



164. Ciliated epithelium from the Frog's mouth, .... do. 96 



165. Monas termo, nutrimental organs of .... Ehrenberg, 97 



166. Alimentary canal, Vorticella citrina, do. 98 



167. Alimentary canal, Stentor polymorphous, i*V . .>* :,^i., ^ *, ... do. 98 



168. Rotifer vulgaris, .:^. ,;, . . Authors, 98 



169. Notomate clavulata . . ... . . . ,& t , w do. 99 



170. The Acephalocyst, . . -:, ; Wu^vi -; '.v<*;n-.v. .-*. do. 99 



171. Coenurus cerebralis, . iu~.~ i j.> f- . Original, 100 



172. Echinococcus hominis, . .... .... .... - do. 101 



178. Cysticercus cellulosa, . .--^-* '-'. J ........ . ^ . . Authors, 101 



174. Head of Cysticercus cellulosa magnified, .... Original, 101 



175. Distoma hepaticum, ,,i ,u. *~. . do. 102 



176. Distoma lanceolatum, . . . ..... Hunterian Museum, 102 



177. Hydra fusca, from the fresh waters, . . -_,,.. . . Authors, 103 



178. Hydra viridis, from the fresh waters, . . . . '^IK do. 104 



179. Corallium rubrum (red coral), . . . . Original, 105 



180. Polype of Corallium rubrum magnified, .-: /*:.; . i . Milne Edwards, 105 



181. Rhizostoma Cuvieri, or jelly fish, . . . . Hunterian Museum, 107 



182. Vertical section of Rhizostoma Cuvieri injected, . do. 107 

 188. Cetonia aurita, another jelly fish, . . . ,4.;...-jJ . do. 109 



184. Cetonia aurita lying on its back, . ..i,^/- *' wv; i . . Original, 109 



185. Echinus, with and without spines, . ,^4. *./-.,, . . Authors, 109 



186. Nutrimental organs, Asterias rubens, . -,-:!. i. . Tiedemann, 110 



187. Nutrimental organs, Echinus, . . . . i,u,.; . . Sharpey, 111 



188. Lantern of Aristotle, . . .^^ .....,^j.i ^. . : -^4; *,,. . Forbes, 111 



189. Two teeth of Echinus, . . ..... ._ .^ ^ Original' 111 



190. Cucumaria frondosa (perfect animal), . . . . do. ' 112 



191. Holothuria elegans Hunterian Museum, 113 



192. Ovarium, Cucumaria frondosa, . . .,,.,*' . . . Original, 115 

 198. Ovarium, Cucumaria frondosa, tubes of, enlarged, . . . do. 115 

 194. Respiratory organg of Cucumaria frondosa, . do. 116 



