CONTENTS. 
of Plants, 227.—Filarie in the Blood of a living Dog: Experi- 
ments of Karsten, relative to the formation of the ‘ images 
of Méser,” 228,—Great Comet of 1843, 229.—Second Comet 
of 1843: Meteoric Observations of April 20, 1843, 230.— 
Hundredth dnigeenty of the American anges Soci- 
any 231. 
NUMBER II. 
Ais B On a New Form of Mountain or other Barometer; by 
Ome J. H. Avexanver, Esq.—(with a plate,)  - - 
I. Notice of “ Molluskite,” or the fossilized remains of the 
— 
iil. 
< 
a 
VII. 
ea 
= 
soft parts of Mollusca; by Gmzon Aucrrnon Man- 
TELL, Egq., LL. D., F. R.S., G.8., &ei, - - 
An effort to refute the arguments oieaiionit in sais of 
the Existence in the Amphide Salts, of Radicals con- 
sisting, like Cyanogen, of more than one element ; ig 
Prof. Rosert Hare, M.D., ~— - 
A New Instrument for estimating de snide of Car- 
bonate of Lime present in Calcareous Substances; by 
J. Lawrence Smiru, M.D.,— - - - - 
. On the Method of Drs. Varrentrapp and Will for estima- 
‘ting the Nitrogen in i i *y J. Law- 
RENCE Smitu, M. D., 
. Remarks on the First Principles of tie Differential Cal 
culus, together with a new investigation of og al 
Theorem ; by Prof. THEoDORE Srrone, - 
. Notice of a portion of Dr. Dekay’s Report on the Fishes 
of New York; by D. Humpureys Srorer, M.D, - 
On Greek pe 2 Roots in —" by Prof. 1 W. 
Gipps, =< 4 - 
Remarks on "a8 and - Ravtiling ditenca of the 
Ocean and Atmosphere; by W. C. ReprizLp, - - 
Abstract of the Proceedings of the Fourth Session of the 
Association of American Geologists and Naturalists, 
. On the upright Fossil Trees found at different levels 
in the Coal Strata of Cumberland, Nova Scotia; by 
Cuances Lyewt, Esq., F. G.S., F. R.S., &e., - - 
. On the Coal Formation of Nova Scotia, and on the Age 
and Relative Position of the Gypsum and accompany- 
ing Marine Limestones; by C. Lyett, Esq., F. G.S., &. 
Page. 
