INDEX TO VOL. XIV. 



Abranchiata, 50. 



Accipiter cooperii, 882. 

 fuscus, 382. 



Acmaeidae, 51. 



Acmasa, 51. 



Actiturus Batramius, 383. 



Actodromus maculatus, 383. 



.aSgialitis semipahnatus, 285. 



iEgiothus linaria, 372. 



Agassiz, Prof. L. Mode of copulation 

 among the Selachians, 339; Observa- 

 tions on boulders in Berkshire Co., 

 Mass., 385; Eulogy on Dr. J. E. Hol- 

 brook, 348; Glacial scratches in Berk- 

 shire and Wachiisett Ranges, 386. 



Agelaius phceniceus, 374. 



Aix sponsa, 384. 



Alaudida?, 374. 



Alcedinidae, 284, 379. 



Aleochsra, parasitic on Anthomyia, 54. 



Algae, distribution of the marine, of the 

 eastern coast of the United States, 64. 



Amekdjiejst to Article VI. of the Con- 

 stitution, 57. 



Amiurus catus, 5. 



Ammonites, reversions among. 22. 



Ammonoids, development of, 396. 



Ampelidas, 277, 370. 



Ampelis cedrorum, 870. 



Anas boschas, 384. 

 obscurus, 884. 



Anatidae, 384. 



Ancistromcsus, 52. 



Androgynoceras appressum, 42. 

 hybridum, 41. 



Aneurus inconstans, 105. 



Annual Report, 207. 



Anomia, 150 



Anthocoridae, 106. 



Anthus ludovicianus. 360. 



Antrostomus vcciferus, 379. 



Aptenodytes, 241. 



Pennantii, 247. 



Aquila canadensis, 382. 



Aradidae, 104. 



Aradus robustus, 104. 



Archibuteo lagopus, 382. 



Ardea herodias, 285, 383. 



Ardeidae, 285, 301, 383. 



Ascidian, early^ stages of an, 351. 



Astur atricapi'llus, 382. 



Athene cuuicularia, 270. 



Atmosphere, germs in, 346. 



Atomosira, 97. 



Atomosira sordida, 98. 



At wood, N. E. Habits of the Blue-fish, 

 92; Habits of the Capelin (Mallotus 

 villosus), 184. 



Aulacostethus, 93. 



Aulacostethus marmoratus, 94. 



Aythya americana, 384. 



Balistes, 3, 10. 



Belonochilus, 104. 



Belonochilus numenius, 104. 



Bernicla brenta, 884. 



canadensis, 384. 



Bicknell, E. A method of producing 

 low powers for the microscope, 44; on 

 preparations of muscle, 57; structure 

 of whalebone, 58 ; on Isthmia nervosa, 

 58; on the microscopical structure of 

 the tooth of Ceratodus, 189 ; exhibi- 

 tion of a hew binocular microscope, 

 393; method of using the microscope 

 in a vertical position, 346 ; remarks on 

 an achromatic condenser, 347. 



Bismuth mine in Utah, 341. 



Bliss, E., Jr. On the anterior verte- 

 bras of Doras niger, and the structure 

 of the fin in Doras and Balistes, 3; on 

 the markings in young fish, 92. 



Blue-fish, habits of, 92. 



Bonasa umbellus, 383. 



Boston, Geology of the vicinity of, 45. 



Botaurus leutiginosus, 3S4. 



Bouve, T. T. Elected President, 3 ; re- 

 marks on the death of the Rev. J. A. 

 Swan, 388. 



Brachiopoda, relations of, 123, 136. 



Brandon, report on the Frozen Well of, 

 307. 



Brewer, Dr. T. M. On some varieties 

 of Quiscalus, 205; on Erismatura do- 

 minica, 205. 



Brigham, W. T. Remarks on volca- 

 noes in Mexico, 126; on conglomerate, 

 128; on the mongous and cobra, 131. 



Brochymena Harisii, 95. 



Bubo virginianus, 381. 



Bucephala albeola, 384. 



americana, 384. 



Burbank, L. S. On the Eozoon lime 

 stones of Massachusetts, 191. 



Buteo borealis, 268, 301, 382. 

 lineatus, 3S2. 

 pennsvlvanicus, 382. 



Butterflies, flight of, 55. 



Capelin, habits of the, 184. 



