550 



INDEX. 



Atamisquea emarginata, Miers, 354. 

 Atuiosplieric electricity, 448. 



apparatus, selF-recordiug, 453. 



battery, the, 454. 



collector, tiic, 455. 



collector, inecliauical, 456. 



deflections, table oi", 4G1. 



electrometer, multiple quadrant, 

 451. 



electrometers, 448. 



galvanometer, the, 453. 



observations, 459. 



on obtaining the electric poten- 

 tial of the upper air, 459. 

 Atriplex julacca, 370. 

 Aulophorus vagus, on the anatomy 

 and histology of, 88. 



alimentary canal, the, 94. 



body walls, the, 92. 



connective-tissue cells, 94. 



explanation of figures, 105. 



general description and habits, 

 89. 



literature, 104. 



material and methods, S8. 



nervous system, the, 101. 



respiratory organs, flie, 101. 



segmental organs, 104. 



vascular system, the, 99. 



B. 



Barrande, J., letters, ISl, 1S2, 193, 

 196, 197, 203, 204, 206, 207, 

 211, 220. 

 Bentham, George, notice of, 527. 

 BiUiugs, E., letters, 185, 187, 201. 

 Bloomcria aurea, 376. 



Clevelandi, 376. 

 Bocrhaana bracteosa, 370. 

 Borneol from cam])hor, method for 



preparation of, 165. 

 Borneol, on the reduction of camphor 



to, 163. 

 Borragincous genera, a revision of 



some, 257. 

 Bothriospermum, Bunge, 262. 

 Breyeria, De Borrc, 16S, 170. 

 borinensis, De Borre, 171' 

 elongata, 171. 

 Brickcllia Nevinii, 297. 

 Brodia>a Lemmonre, 376. 

 Brouguiurtia minutifolia, 360. 



Caeoma Abietis-Canadensis, 323. 



Abietis-pectinatui, Kces, 323. 

 Calandriuia Cotyledon, 355. 



Leana, 356. 



oppositifolia, 355. 

 California, Arizona, and their Mexican 

 borders, new genera of, and 

 two additional Aselepiada 

 290. 

 Calliandra Portoricensis, 364. 



Schottii, Torrey, 364. 

 Calydorca Tcxana, leaker, 375. 

 Calyptridiuiii quadripetaluni, 356. 



roseum, 356. 

 Camassia esculent a, Liudl., 376. 



Leichtliuii, 376. 

 Cambarus, ]0S. 



acuminatus, 113, 144. 



advena, 140. 



affiiiis, 146. 



Alabiunensis, 125, 146. 



Alleni, 110, 138. 



angustatus, 137. 



argillicola, 115, 144. 



Bartonii, 142. 



Blandingii, 135. 



Carolinus, 140. 



Clarkii, 13(5. 



compressus, 127, 146. 



connitus, 120, 145. 



Cubcnsis, 142. 



Diogenes, 144. 



dubius, 114, 145. 



extrancus, 145. 



fallax, 136. 



forceps, 133, 148. 



Girardianus, 117, 145. 



gracilis, 141. 



hamulatus, 145. 



Ilarrisonii, 130, 147. 



Hayi, 108, 136. 



immunis, 146. 



Jordani, 119, 145. 



lancifer, 146. 



latimanus, 144. 



Lccontei, 137- 



manicnlatus, 137. 



medius, 121, 145. 



Mexicanus, 141. 



Mississippiensis, 123, 146. 



Montezunifc, 149. 



Ncbrascensis, 145. 



obscunis, 148. 



Palmeri, 124, 146. 



