CONTENTS. Vv 
Astronomy.—Notice of the Meteor of June 12, ay DANIEL KirRKwoop: Micro- 
metric measurement of Double Stars: Chica 0, Observatory : Handbook of 
: aay 
Miscellaneous Scientific Intelligence—Abstract of a pre entitled Reflections 
sur les Chronometres, J. A. ehgr ses ate HKarthquake wave of May 9th and 
10th, 166.—Tides of the Arctic Seas: Massachusetts ee of ig eee S 
rae Transfer of the potest Collections 4 Amherst College: Imperial 
my of Sciences of St. Petersburg: Nationa I Academy of re 167.— 
BorroMLey, 168,.— Obituary.— Sanborn Tenney : Dr. Stephen Reed : G. F. 
Winslow, M.D., 168. 
‘NUMBER LXXXIL ' 
age 
P 
Art. X XII.—On a new Process for the Electrical Deposition 
of Metals, and for Soph eon: Metal-covered Giass 
Specula; by A . W. Wriecu canbivecccmse ct 168 
XXIII.—A new and ready m aochod ‘for the Estimation of 
Nickel in Pyrrhotites and Mattes; by M. S. Cuznry 
Sid 10 OHARA 178 
XXIV.—Notes on the internal and external structure of Pa- 
leozoic Crinoids; by C. WacusMuTH, .--.-.-.----.--- 181 
XXV. —Phen omena of Binocular Vision ; by J. LeConte, is A 
XXVI. Nitrate; 
G: Mitran, 00.2.5 3 fee ee 195 
xxvii —On “a cxystaltine form of the hydrous | and anhy- 
drous varie y 
nium steeeate, e iS thins 198 
XXVIII.—The relations of the Daslogs of Vermont to that 
of Berkshire; by J. D. Dana, ---- 202 
XXIX.—On the preparation of Cylinders ¢ of Zirconia for the 
Oxy-hydrogen Light ; by 3: ©. Dawei o.oo: ee sk 208 
XXX.—Oceurrence of Garnet with the Trap of New Haven; 
XXxi CDemaia of the » Rochester, Warrenton, and Cyn- 
thiana Meteoric Stones, with som arks on the pre- 
Maid falls of Meteorites in the nai regia by J. L. 
a 
MEAT Notiod ot x new genns of Annelids from the Lower 
Silurian; by G. B. Gri Pe eee SEO  « 
IL—New as Sent 5 ates “by O. ©. Marsn,.. --. 249 
SCIE sagt INTELLIGEN CE. 
Physics.—The Radiometer, Cooks, 23 
and Mineralogy.—Gravel a sits referred to t 8 Dnt, in Boone County, 
reine nd Sutton: Gravel Ridges in the Merrim x valley, G. F. Wrieat, 
, sup; Fos: ; . 
J. CHAPMAN: Glaciers of the Swiss Alps in the Glacial era: Geology of New — 
Hampshire: Lithology of the Adirondac! _ 240.—New method of Gchiepirad 
'y and Zoology.—Rapi wth of. Vallisneria spiralis: Evolutionary law 
as illustrated by ations) a ewe in an Apple tree, T. MEEuAN, 243. —Remarks 
_on the Yellow Ant, Lumpy: Sexual Dimorphism in be tterflies, 244. 
