CONTENTS OF VOLUME XXV. 



NUMBER I. 



Page. 



Art. I. Historical Eulogy on the Marquis De Laplace ; by M. 



Baron Fourier, ___----1 

 IL On Aerial Navigation ; by H. Strait, - - - 15 



in. On the connection between the Mosaic History of the 



Creation and the Discoveries of Geology, - - 26 



IV. On the Vitality of Toads, &c. enclosed in firm materials ; 



by the Hon. Wm. A. Thompson, - - - - 41 



V. Experiments for illustrating the causes of Water Spouts ; 



by Count Xavier De Maistre, - - - - 47 



VI. Observations on some Experiments in Electricity ; by 



Prof. Walter R. Johnson, ----- 57 

 VII. Botanical Communications ; by H. B, Croom, - - 69 

 VIII. A description of a new Mineral Species, from Nova Sco- 

 tia, by C. T. Jackson, M. D. ; with a Chemical Analy- 

 sis, by Mr. A. A. Hayes, of the Roxbury Laboratory, 78 

 IX. Internal Improvements of the State of Pennsylvania ; by 



Edward Miller, Civil Engineer, . - - - 84 

 X. On the Analysis of Square Numbers ; by A. D. Wheeler, 



Instructor of the Latin Grammar School, Salem, Mass. 87 

 XL Experiments with Potassium and Sodium ; by Julius T. 

 DucATEL, M. D., Professor of Chemistry in the Medical 

 Department of the University of Maryland, - - 90 

 XII. On the application of the Fluxional Ratio to particular 

 cases; and the coincidence of the several orders of Flux- 

 ions with the binomial theorem ; by Elizur Wright, Esq. 93 



XIII. Notices of Fossil Wood in Ohio ; in a letter from Rev. 



Savrs Gazlay, dated Cincinnati, April 30, 1833, - 104 



XIV. Fossil Vegetables, - - 108 



XV. Observations on the Hurricanes and Storms of the West 



Indies and the coast of the U. States; by W. C. Redfield, 114 

 XVI. Summary Statements of some of the leading Facts in Me- 

 teorology; by W. C. Redfield, - - - - 122 

 XVII. On the construction of De Luc's Columns, as modified 

 by Zamboni ; and on the modification of the single leaf 

 Electrometer, contrived by Robert Hark, M. D, Pro- 

 fessor of Chemistry in the University of Pennsylvania^ 136 



iyj/^7 



