The next No. of this Journal will be published on the first of Sept. 
CONTENTS. 
3 
Art. I. The Sipithoontan Institution, % 
Il. “Description ofa néw-species of * Glathropterise discovtred in 
the Connecticut Valley Sfhdsiona by E. Hircacock, Jr.; M.D:, “22 
III. On the Periodical Variatiqns of the Declination and Directive 2. 
Force of the “Magnetic: Needle. ;yby Prof. W. WA: Norton, 26 7 
IV. On the Periodical anes ait Fall ie ie Lakes; 33 by wreath: 
LAcHLAN, ‘ asl : 45 
V. Remarks on ihe iB in which ie — ii Seaceee 
and 1 Composhion of - -Mineral Veins . near: thie~ surface, with , 
moe reference ty thre East. Tennessee’ Bd Mines ; 
y- Jed): Wayrney,~ ao™ . 
VI. ae a Universal-indicator fcr + Mieroseape by Prof. ng We 
Barter.—With a Plate, 
VU. - the Composition of. Eggs in i animal series ; : Vie . 
NC cIENNES~and, Fremy.—Pait HI, --* 
Vill. “Otc lions 6 on the Extent of the Gold Regist ‘of, Calter: 
-nia and ‘Oregon, with notices Ofy Minezal-localition in Cali- 
fomia, and of some Apres carmen = i - 
Gold; by Wm. P. Bua emt caked : 
IX. Analysis of Idocrase pa siete Polk 064 Bessa: : i 
Jy. W. Matter, Ph.D., —- 
X. Observations on Binocular Vision ; by Prof, Ww. B. Koc 
xe Reséarches i in Magnetisation 3 . iy M. Jerome Nicknzs,  - 
XIL. ae of M. Jerome Niexizs—Annual Session of 
emy of Sciences, 102. —Spongy Metals used in 
therapenttedt Telegraphic méssages simultaneous in two 
directions—Calcium, Barium, “Aluminium, 103.—Piscieul-— 
ture, 104: —Necrology. —M. Gauss, 104; Lt. G. Duvernoy, 
105. —Magnetic force of Oxygen: Oxygen in the nascent 
state ; “Ozone, 108.—Attempts to insulate Figorine: Alu- 
minium, Silfcium, &c. &c.: Spongy Meta 109.—Paris 
Universal Exhibition, 110. —Photography ; | Employm nt of 
the: Cyattid Of Todiie : “ATtificlal Alcohal; T11.—Cha 
= scientific corpertt Paris 3 Bible iagraphy> 1. = 
~~ 
Aine 
SCIENSIFIC INTELLIGENCE, 
Physics —On the Expansion of certain substances by Cold, by W. x ) 
oe -» 113.—On the Nature of the Force by which Bodies are 
_ (For remainder of Contents, see third page of © 
