ee —————s Se. Lh 
= 
Aaa 
Ant. I. 
405 
<a 
S 
VI 
be 
rs 
XL. 
XU. 
XIII. Temperature of the cities of Rome, (Italy,) nik Mone 
York ; by Jerentan Van Renssevasr, M.D, > 
CONTENTS OF VOLUME XLII. 
OO 
NUMBER I. 
Notes of a Botanical Excursion to the Mountains of - 
North Carolina, &c.; with some remarks on the Bot- 
any of the 20 ree Mountains ; by Asa oo 
M. D., 
. Account of isi winaeoeined Plants of Central Ohio ; 
by Wm. 8. Suttivant, 
. Notes hag the pages 5 of the Weitdi dike’ ; ty JAMES 
Han 
. On ee ‘Pa ventanades of iis Oxide of Ethule, or Perchloric 
Ether ; by Cuare Hare and Martin H. Bove, 
new Demonstration of the Principle of Virtual Veloci- 
ties; by Prof. Tzopore Strone, = - - 
. Solution of a Functional Equation, which has been em- 
ployed by Potsson in demonstrating the ———- 
of forces; by Grorce R. Perkins, A. M., 
2 Experiments on’ Bichlorure of Sulphur and certain car- 
- bures of hydrogen ; by Prof. F. Cuever, 
. Contifitation of the Remarks made upon “uaiae,* con- 
sidered in a medico-legal re of view 3 ia J. Law- 
RENCE SmirTH, M. D., 
. Remarks upon an examination of the Peroxide of Man- 
; by Henry C. Lea, - - 
A Sketch of the Infusoria of the family Bacillaria, with 
ssome account of the most interesting species which 
have been found in a recent or fossil state in the United 
States ; with two plates, by Prof. J. W. Bamey, - 
Description of Eight new Species of Shells, native to 
the United States ; with a plate, by Henry C. Lea, - 
Observations on the Storm of December 15, 1839; by 
Witiiam C. Reprrerp, A. M., - 
