GENERAL INDEX 
OF 
VOLS. XXXI—XL, SECOND SERIES. 
Note.—In the statement of the number of the volume, the xxx (thirty) is omitted. The 
names of minerals are andi only under the word minzRaL. The. references to articles on 
Botany, Geology an logy, are grouped under these words, but at the same time are in gen- 
eral inserted in their es elsewhere, 
A 
Ae C., transparency of atmosphere, viii, 
Brunnow’s method for comet’s ele- pen on Museum ia Zoology 
oexitie wcean remains at, vi, 123, 402, Won ari i Braail, x1, 389. 
: too ey aed suessena ae Epa gh to Nat. Hist. of U. 8., 
Faeeyag es Ca oy I anmmenecneneat usr 
of carbonic acid, xl, 127. Agricultural ee oir ars ii, 
ant radiation of pow b ii, 106. 
National, a 462, vii, noticed, vii, 
446, 4,1 ix, 114, ate Air- seit ie coal period, Pons no- 
AME PHI ticed, vi, 
sad secret Airy’ . errors of observati on, li, 185. 
Acclination, igre i, 272, il, 102, 103. Akin on combustion of invisible rays, ix, 
n Aus iii, 433, vii, 300, ix, 84. 
Acetate oft es ‘ Albert coal, ix, 267, 356. 
$d veh: and re Album men, wi with dextri rin, etc., vi, 268. 
cohols, enue tain copper, lead oe ok 
oe 
Aerolites ||Alge 
i. v. mestrn errno Alkalinity, Johnson, Vv, 
Fe rations, noticed, i, 59, ili,) eo wee carbonates, saponification by, ii, 
259, iv, 8 vii, 75, 87, yam | 106. 
fossils. sab ae andes % Atalolae” on ani —- of, ii, 415, 
Aga rdh, produc y putrefaction, vi, 416. 
Spe rum, noticed, vii, 286. ar Nebras ce i 105. 
: A E ales 7 t, trees 
Aguis 4 on tentacles uk Maw, nO allem He on N. A. , noticed, ix, 
on Annelids, ete seo ¥, 300, 
um and Tubidium 
on Echinoderms, peters: mt and To 
