INDEX TO VOLUME XXXI. 
A. 
emy of Nat. Bet Philadelphia, Pro-| 
eedings, 1 
Acclimation, 272, 
Louis, Natural History of the 
United States, 29 
Alloys of nd fr ne, 286. 
Alumina and iron, separation from man- 
fanese, 1 
- ieeparation from lime and magnesia, 
America, 0 ocuments Eeenceming 
heometen e. G. Squier. 
prea Association for abadciban 
T. 8. Hunt , B92, 
icric acid and ge eog bases, 
n ey Lea, 73. 
Appalachian mountain ‘Gaus at Guyot, 
Appleton’s New American Cyclopedia, 
Arctic explorations, oh 
soundings, McClin 
nsas uber Se eters 
Do, 455. 
a and Saskatchewan exploring 
expedition 
Asteroids, Titania, Daniie, bag 136. 
Astronomy and Mete teorology, #. C. Her- 
ene translation of —— 
rarbonecs, W. Meirel, 88 
Atoll of Ebon in Micronesia, Z. 7. Doane, 
—" weights of the elements, W. Gibbs, 
Aurora, an electric discharge modified by 
earth's 's magnetism, B. V. Marsh, 311. 
B. 
Bache, A. D., declinometer observations 
at Girard Colle e, 197. 
influence of the moon’ 
on asslinasion of magnetic needle, 98. 
: “aoe ihe eg ordial fauna and T: 
conic sys 
Beer J. Nicklas, 155, 275. a 
apa oop t g, 
Bislosicnl Ce tea of Acad. Nat. Sei. 
aera” -corpuscles se 
Book notices, 142, 304, 450. 
Books RAH 304. 
Boston Soc. Nat. Hist. Proceedings, 156, 
vine in the reti- 
o 
Botanical and Paleontological Report on 
the geological State survey of Arkaba: 
eux, 
necrology for 1860, A, ship 461. 
Society Canada, 308. 
ANY— 
Additions to flora of Wisconsin, Td. 
A second century of jou W. J. Hooker, 
Ca i a by C. Dewey, 23, 
Catalogue of hovering pi plants and ferns 
io, . Newber: 30, 
of plants fo ee in . New Bedford, 
—_ 
* New mnogimous and filicoid 
ieee of es astle Co., Delaware, 
ward Te 
Filices Hort “Botanic Lipsiensius, G. 
Mettenius, 1 
pte, onan thane et Fendleriane, etc., 
i Capenci, or plants of Cape Col- 
ny, Caffraria and Port Natal, Harvey 
on A 
of the British ee Islands, 
Fungi Sig ae epee H. W. Ra- 
Multiplicity of embryos 
tion of Celebogyne, A aes 131. 
does Wrightiane e Cuba Orientali, a 
Procee of the Linntean Society 
1860, contents and notes, Asa Gray, 
a Fda flora, Thesaurus Capen- 
Searles sviniong? descriptions of all 
known Mad Ua Hooker, 132. 
Uber Sines G. Metten- 
Uber 2 eatraie und Reimung von 
Bradley, F., shooting stars 
860, 136. 
Celebogyne, 5 ee ee’ 
at Chicago, 
