XX 



LIST OF ILLUSTRATIONS. 



169. Transverse Section of i^azeZ, : 

 110. Ditto of Fossil Conifer, 



171. Vertical section o{ Fossil Conifer, radial, 



172. Ditto Ditto, tangential, 



173. Ditto of Mahogany, . 



174. Transverse Section of Fossil-wood, . 



175. Vertical Section of Ditto, 



176. Transverse Section of Fossil-wood, . 

 • 177. Vertical Section Ditto, 



178. Transverse Section of Aristolochia, {?) 



179. Ditto of Burdock, 



180. Cuticle of Yucca, 



181. Ditto of Indian Corn, 



182. Ditto of ^^:ipte, after Brongniart, . 



183. Ditto of Bochea, " . 



184. Vertical Section of leaf of JJoc/tea, after Brongniart, 



185. Cuticle of /)•/.«, Ditto, . 



186. Vertical Section of leaf of Jm, Ditto, 



187. Longitudinal Section of ditto. Ditto, 



188. Cuticle of Petal of Cffl-ddram, 



189. Pollen-grains of ^tt/j(ea, &c., 



190. Seeds of Pop/)^, &c., .... 



191. Amceba princeps, after ^hvenhevg, 



192. Actinophrys sol, after Clarapede, 



193. Various forms of i?Aizo;tfO(i«, after Ehrenberg, . 



194. Kerona silurus, after Milne-Edwards, 



195. Paramecium caitdafiim. Ditto, 



196. Group of Voriicella, after Ehrenberg, 



197. Fissiparous Multiplication of Chilodon, after Ehrenberg, 



198. Metamorphoses of Voriicella, after Stein, 



199. Ditto of TricTioda, after Haime, 



200. i?f(7f/((«nMs pate, after Milne-Edwards, 



201. Rotifer vulgaris, after Warenherg, 



202. Stephanoceros Eichornii, Ditto, 



203. Noteus quadricornis, Ditto, . 



204. Oromia oviformis, after Schulze, 



205. Rosalina ornata, after Schulze, 



206. Orbitollies complanatus, 



207. Animal of simple type of ditto, 



208. Animal of complex type of ditto, 



209. Section of Fanjasina, after Williamson, 



210. Podocyrtis Scliomhnrgkii, after Ehrenberg, 



211. Bhopalocanium ornatum, Ditto, 



212. Haliomma Humboldiii, Ditto, . 



213. Perichlamyditim pra;textwn, Ditto, 



214. 7W^cyAY«i(( from Barbadoes, Ditto, 



215. Stylodiclya i/racilis, Ditto, 



216. Asiromma Arixioielis, Ditto, . 



217. Structure of Oranlia, after Dobie, 



218. VortioQ of Halicliondria, 



219. Siliceous spicules of Pac%ma;!4«»ia, 



220. Hydra fusca, after Milne-Edwards, 



221. Ditto in gemmation, after Trembley, 



222. Medusa-buds of Syncoryna, after Sars, 



223. Citmpannlnria gelatinosa, after Van Benedeii, 



224. Scr/idaria cupressina, after Johnston, 



225. Thaumantias pilosella, after E. Forbes, 



226. Development of Medusa-buds, after Dalyell. 



227. Development of Medusce, Ditto, . 



228. Ci/dijipi: and Beroe, after Milne-Edwards, . 



229. Niclihira niilinris, after Quatrefages, . 



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