350 



INDEX. 



Pannaria placodiopsis, 183. 



Sonomensis, 169. 



stenophylla, 169. 



symptychia, 168. 



Taylori, 183. 

 Parabronibeiizyl Compounds, on, 

 221. 



Parabromalphatoluylic Acid, 

 223. 



Parabrombenzylacetate, 222. 



Parabrombenzylalcphol, 221. 



Parabrombenzylcyanide, 222. 



Pai'abrombenzylsulphocyanate, 

 227. 



Triparabrombenzylamine, 22.5. 

 Parnielia fegialita, 166. 



coufluens, 166. 

 Pectocarya pusilla, 81. 



setosa, 81. 

 Pentstenion coman-heniis, 81. 



strictus, 82. 



Wardi, 82. 

 Pertusavia albinea, 177. 



ambi,g:ens, 176. 



colobina, 17.5. 



eviglypta, 177. 



flavicunda, 176. 



thamnoplaca, 175. 



velata, 176. 

 Petrocelis cruenta, 239. 

 Peyssonnelia atro-purpurea, 239. 



Dubyi, 239. 



inibi'icata, 240. 



rubra, 239. 

 Phacelia grisea, 80. 

 Philibertia cynanchoides, 64. 



elegans, 64. 



linearis, 64. 



Torreyi, 64. 



undulata, 65. 



viminalis, 64. 

 Photoheliogi*aph, Theory of the 



Horizontal, 186. 

 Phyllophora Clevelandii, 242. 

 Physcia obscura, 167. 



picta, 166. 

 Pilopliorus acicularis, 177. 

 Placodium atroalbura, 172. 



bicolor, 184. 



ferrugineum, 171. 



fen'uginosum, 171. 



galactophylluni, 171. 

 Plants, Description of Xew Species, 



&c., 246. 

 Platanthera fcptida, 277. 



gracilis, 277. 



Plantanthera striata, 277. 

 Plocamiuni violaceum, 240. 

 Podostigma, 65. 

 Polyotus angustifolius, 72. 

 Polysiphonia dictyurus, 237. 



pecten- Veneris, 237. 

 Polysiphonia pennata, 237. 



secunda, 236. 



senticulosa, 236. 



thyrsigera, 237. 



vei-ticiHata, 237. 

 Prionotis Andersoniana, 2r42. 



Clevelandii, 242. 

 Proceedings, 279. 

 Psoralea Calif ornica, 251. 

 Ptycanthera acuminata, 79. 



oblongata, 79. 

 Pyrola, 61'. 

 Pyxine, 166. 



coccinea, 167. 



Cocoes, 166. 



picta, 166. 



retirugella, 166. 



R. 



Reverse Filtering, Process and Ap- 

 plication of, 124. 

 Reyesia, 165. 



Rhabdonia ramosissima, 238. 

 Rhododendron Chapmanii, 61. 



punctatum, 61. 

 Riceardia INIontagnei, 237. 

 Rinodina mamillana, 174. 



milliaria, 175. 



ochrotis, 174. 



radiata, 173. 



thysanota, 174. 

 Rudbeckia Porteri, 59. 

 Rumex longifolius, 254. 



occidentalis, 2.53. 

 Rumford Committee, Appropria- 

 . tions, 279, 283. 



Monument, 286, 287. 

 Rumford's Works, 279, 283. 



S. 



Sarcophyllis Californica, 241. 



eduiis, 241. 

 Sarcostemnia Brownii, 65. 



clausum, 65. 



crassifolium, 65. 



cynanchoides, 61. 



elegans, 64. 



