CONTENTS. v 
NUMBER II. 
Page. 
Art. I. A Description of a Magnetic Electrical —_— in- 
vented by E. M. Crarxkz, - 213 
If. Description of E. M. Online s mushisper er, - 
III, Some observations in Holland, connected with the Prai- 
rie region, - - 
IV. Description of an Air = of a new construction, which 
acts either as an Air Pump, or a Condenser, or as both; 
enabling the operator to exhaust, to condense, transfer 
a Gas from one cavity to another, or to pass it through 
a Liquid; by R. Harz, M. D., &c. Ke. - - 237 
Process for Nitric Ether, or Sweet Spirits of Nitre, by 
means of an esi Sar gaa ; id 4 Ane BL, Ls 
Ge. &c., 
VI. On the Cause of ss itieees of a Hesirviis Lee ap- 
parently subjected within to a great pears from a 
Head of Water; by R. Harz, M. D., &c. &e., - 
VII. Sundry Improvements in tia or » Maniplaon; 
by R. Hares, M. D., &c. 
VUI. Notice of Oriental Minerals ; ‘by Prof, F. Baxi sik the 
Ne 
Editor, - . - 249 
IX. Meteoric Iron, - - - - - . - 257 
X. On Natural Magic, - . ~ . - - 258 
XI. Meteorological Sketches, - 261 
XII. Seventh Meeting of the British Aeseinitin rit the “Ads 
vancement of Science 
XIII. Remarks on the occurrence of he Meroe Horeills in 
Summer; with an abstract of Huxham’s Auroral Reg- 
ister from 1728 to 1748; by Epwarp C. Herrick. 297 
XIV. Some account of two visits to the Mountains in Essex 
County, New York, in the years 1836 and 1837; with 
a Sketch of the Northern sources of the Hudson; by 
W. C. Reprrexp, 301 
XV. Contributions to English Lexicography by Prof, J. WwW. 
Gipss, 
XVI. Lectures and Wiens of Dr. feisaon en, - 328 
XVII. Influence of the Great Lakes on our Autumnal Sunsets ; 
by Wixxis Gaytorp, 
XVIII. Some Remarks on the Eiiiien Paradenbian of Reacia: 
niart, and on the necessity of preserving the Genus 
