VI CONTENTS. 



Page. 

 IV. Experiments on the stiffness and strength of certain kinds 

 of timber, made by order of Lt. Col. Totten, and com- 

 municated by Lt. T. S. Brown, U. S. Eng. - 228 

 V. On the Causes of the Aurora Borealis, - - 235 

 VI. On the proximate causes of certain Winds and Storms; 



by Prof E. Mitchell, Univ. of Nor. Car. - - 248 

 VII. On the rapid production of Steam, in contact with heated 

 metals ; by Prof Walter R. Johnson, Franklin Insti- 

 tute, Philadelphia, - - - - 292 

 VIII. List of the Plants of Chile ; translated from the Spanish, 



by W. S. W. RuscHENBERGER, M. D. U. S . Navy, 299 



IX. Notice of the mine of Spathic Iron (steel ore) of New 

 Mllford, and of the Iron Works of Salisbury, Conn. ; by 

 C. U. Shepard, Ass't to the Prof of Chem. &c. in Y. C. 311 

 X. Remarks oh Prof Eaton's " Observations on the coal for- 

 mations in the State of New York ;" by David Thomas, 

 Civil Engineer, &c. - - - - 326 



XI. Electro-Magnetic Experiments; by Dr. G. Moll, Prof 



of Nat. Phil, in the Univ. of Utrecht, &c. &c. - 329 

 XII. Notice of improvements in the Surveyor's Compass, con- 

 structed by Thomas Kendall, of New Lebanon, N. Y. 337 

 XIII. Remarks on Arsenic, with drawings of the color of its 

 precipitates, formed by reagents applied to them ; by 

 Dr. Lewis Feuchtwanger, _ _ - 339 



MISCELLANIES. DOMESTIC AND EOKEIGN. 



1. The Author's Explanatory Notice of the Elements of Chem- 



istry, in the order of the Lectures given in Yale College, 343 



2. Proceedings of the Lyceum of Natural History of New York, 353 



3. Academy of Natural Sciences of Philadelphia, - - 355 



4. Swallows ; notice by Dr. Steel, - - - - 356 



5. Annals of Education and Instruction,* - - - 357 



6. Mastodon, near Rochester, N. Y. - - - 358 



7. Analysis of the supposed Anthophyllite of New York, 359 



8. 9. Penetrativeness of fluids — Albany Institute, - - 360 

 10, 11. Singular impression in marble — Remarks on the amelior- 

 ation of our physical climate, - - - 361 



12. The Chemistry of the Arts, - - - - 362 



13. A Treatise on Fever, ----- 363 



* Repeated through inadvertence ; it was in the preceding number. 



