The next No. of this Journal wili be published on the first of July. 
CON TENTS: ’ 
Page. 
Ant. XXXI. oe oe of San a for the nae 1855 ; 
y H. Gres 
XXXII. On. the Gales of the Hlidson’s s Bay ‘Terrichien: and 
of portions of the Arctic and een: Regions. of 
America; by A.K. issioree, M. A., M.R.C.P., &e:, -- - 313 
of Iron in Coal Measures ; by Prof. Witt1AmM B. Rogers, 339 
XXXIV. Subdivisions of the ee hear = Great eee 
ae according to Prof. Sedgw 
ade. XV. New method of dissitegrating masses “of Fossil Diato- 
fF ___ macez; by Prof. J. W. Bartey 
ee seer On the hon: masrigtage of larizing Silica in the Organic 
ee Kingdoms ; by Prof. W. Barter 
XXXVIL On the cen anaes fatélg: sisade the Har. 
ton Se for ascertaining a mean Geanty of the Earth; .. 
by G..B. Arey, Esq., F.R.S., B59 
| xxxvie On the rate of Eraporation 0 on the Tolaré Lakes oF oe 
3 California ; by Wm. P. Brak Stas ee 
On Electric Conduction ; : te Prof, Fanapay, D.C.L., etc., 368 
the Occurrence of numerous Fragments of ‘ir-wood in. 
slands of ue be Se Archipelago; with Remarks on 
e Rock Specimens brought from that Region; by me 
iaexivk Lapoay- MoacHts0% D.C. ce F.B.S.; a . 
357 
_ On the Eart auake of f April 2, 1851, in “Chile ; ; 
J. M. GILLISS, A. M., U 
Vv. a a ae to 2 the article on the Theory hr Ree 
attributes the Zodiacal 
‘ing = 2 Earth 5 by Prof. F. A. P. Bannanp, 
V. On the Presence of Vivianite eS 
by Lieie 
ee 38 
