XXiv LIST OF WOOD-CUT ILLUSTRATIONS. 



PAGE 



148. Zoospores of Ulva, after Thuret 321 



149. Oscillatoria contexta, after D'Alquen 323 



150. Nostoc, after Hassall 324 



151. Generation of Vaucheria, after Pringsheirn 327 



152. Zoospores of Achlya, after Unger 328 



153. Cell-multiplication of Conferva, after Mohl 331 



154. Sexual Eeproduction of (Edogonium ciliatum, after Pringsheirn 334 



155. Zygnema quininum, after Klitzing 335 



156. Chcetophora elegans, after Thuret 336 



157. Batrachospermum moniliforme 337 



158. Nitella jlexilis, after Slack 339 



159. Antheridia of Chara, after Thuret 341 



160. Mesogloia vermicularis, after Payer 343 



161. Sphacelaria cirrhosa (original), with antheridium of S. tribu- 



loides, after Pringsheirn 344 



162. Receptacle of Fucus, after Thuret 346 



163. Antheridia and Antherozoids of Fucus, after Thuret . . . 347 



164. Tetraspores of Carpocaulon, after Kutzing 349 



165. Torula cerevisice, after Mandl 352 



166. Sarcina ventriculi, after Robin 353 



167. Botrytis bassiana, after Robin 355 



168. Enterobryus spiralis, after Leidy ....... 356 



169. Structure of Enterobryus, after Leidy 357 



170. Fungoid Vegetation from Passulus, after Leidy .... 359 



171. Shell of Anomia penetrated by Parasitic Fungus . . . 359 



172. Stysanus caput-medusw, after Payer 360 



173. Puccinia graminis 362 



174. Mcidium tussilaginis, after Payer 364 



175. Clavaria crispula, after Payer 364 



176. Fructification of Marchantia, after Payer 365 



177. Stomata of Marchantia, after Mirbel 366 



178. Conceptacles of Marchantia, after Mirbel 368 



179. Archegonia of Marchantia, after Payer ..... 369 



180. Elater and Spores of Marchantia, after Payer .... 370 



181. Portion of Leaf of Sphag7ium 371 



182. Structure of Mosses, after Jussieu 372 



183. Antheridia and antherozoids of Polytrichum, after Thuret. . 373 



184. Mouth of Capsule of Funaria 374 



185. Peristome of Fontinalis, after Payer 374 



186. Ditto of Bryum, ditto 375 



187. Ditto of Cinclidium, ditto 375 



188. Section of Petiole of Fern 376 



189. Sori of Polypodium, after Payer ....... 377 



190. Ditto of Hcemionitis, ditto 378 



191. Sorus and Indusium of Aspidium . ...... 378 



192. Ditto of Beparia, after Payer .... 378 



193. Development of Prothaliuni of Pteris, after Suminski . . 379 



194. Antheridia and antherozoids of Pteris, after Suminski . . 381 



195. Archegonium of Pteris, after Suminski 381 



196. Spores of Equisetum, after Payer 384 



197. Section of leaf of Agave, after Hartig 387 



198. Section of Aralia (rice-paper) 388 



199. Stellate Parenchyma of Bush 389 



200. Cubical Parenchyma of Nuphar 389 



