INDEX TO YOL. II. 



A. 



Acanthophora, 339. 

 Acarphtea artemisisefolia, 74. 

 Accrates atropurpurea, 76. 



cordifolia, 76. 

 Acetabularia crenulata, 378. 

 Acrotylus clavatus, 072. 

 Agarum, 3.58. 

 Ahnfeltia, 369. 

 Alaria, doo. 

 Alcohol, Interferential Constant 



of, 404. 

 Algae of United States, List of 



Marine, 3-31. 

 Algebra. Linear, Use and Trans- 



foi'mations of, 39.5. 

 Algebras, Multiple, Resolutions of, 

 392. 



Application of Logical Analy- 

 sis to, 392. 

 Alsidium, 359. 

 Amansia multifida, 3.50. 

 Amarantus leucocarpus, 347. 



Powellii, 347. 

 Ammonia-Cobalt bases. Researches 



on, 1. 

 Ampere's Theory, Jamin's Objec- 

 tions answered, 445. 

 Amphiora, 36 L 

 Amsinckia, 53. 



Douglasiana, 54. 



echinata, 54. 



intermedia, 54. 



lycopsoides, 53, 5i. 



spectabilis, 5j, 54. 



tessellata, 54. 



vernicosa, 54. 

 Amygdalus microphylla, 7L 

 Anadyomene flabellata, 378. 

 Anchusa Virginica, 51. 



Antiphytum, 54. 



floribundum, 55. 



heliotropoides, 54, 55. 



linifolium, 54. 



Mesicanum, 54. 



Walpersii, 54. 

 Armatures, Effects of, on Electro- 

 magnets, 385. 

 Arthrocardia frondescens, 334. 

 Arthrocladia villosa, 354. 

 Asarum caudatum, 346. 



Ilartwegi, 316. 



Hookeri, 346. 

 Ascothamnion intricatnm, 378. 

 Asperococcus, 357. 

 Astragalus episcopus, 346. 



Pulsiferi, 69. 



sesquiflorus. 346. 



Thompsonse, 315 

 Audibertia Clevelandii, 76. 



B. 



Bangia, 378. 

 Biographical Notices : — 



Friedrich W. A. Argelander, 



^ 505. 



Elie de Beaumont, 507. 



Benjamin R. Curtis, 476. 



George Derby, 478. 



Sir William Fairbairn, 510. 



Francois P. G. Guizot, 511. 



Francis C. Lowell, 480. 



Sir Charles Lyell, 513. 



Charles G. Putnam, 481. 



Nathaniel B. Shurtleff, 482. 



James Walker, 485. 



Jeffries Wyman, 496. 

 Blodgettia confervoides, 378. 

 Borraginaccae, Notes on, 48. 

 Bostrychia, 303. 



