VI CONTENTS. 



Page, 



XL Observations on Sulphurous Ether, and Sulphate of 

 Etherine, (the true Sulphurous Ether ;) by R. Hare, 

 M. D., Prof. Chem. Univ. Penn. - - - 275 



XII. Of the Reaction of the Essential Oils with Sulphurous 

 Acid, as evolved in union with Ether in the process of 

 Etherification, or otherwise ; by Prof. R. Hare, M. D. 281 



XIII. Of Sassarubrin, a Resin evolved by Sulphuric Acid from 



Oil of Sassafras, which is remarkable for its efficacy in 

 reddening that acid in its concentrated state ; by Prof. 

 R. Hare, - - - 285 



XIV. Meteorological Register kept at Matanzas; by A. Mal- 



LORY, 287 



XV. On the Elevation of Mountain Ranges, - - - 290 

 XVI. Notes on Chemistry, &c. ; by Prof. J. W. Bailey, 292 



XVII. On the Elevation of the Banks of the Mississippi, in 



1811 ; by F. C. Usher, 294 



XVIII. Description of the Argulus Catostomi, a new parasitic 

 Crustaceous animal, (with figures ;) by J. D. Dana and 



E. C. Herrick, 297 



XIX. Translation of a Memoir on the Impregnation of Plants, 

 with prefatory remarks on the progress of discovery 

 relative to vegetable fecundation ; by Asa Gray, M. D. 308 

 XX. Additional Remarks on the Tails" of Halley's Comet; by 



Prof. B. F. Joslin, 324 



XXI. Proceedings of the British Association at Bristol, in 



August, 1836, 332 



XXII. Description of a new species of fresh water Tortoise, 

 inhabiting the Columbia River ; by Richard Harlan, 

 M. D. F. L. S., &c. 382 



XXIII. Notice of the Orbicular Lizards, or horned Agamas ; by 



R. Harlan, M. D., &c. 383 



XXIV. Description of a new species of Quadruped, of the order 



Rodentia, inhabiting the United States ; by R. Har- 

 lan, M. D. 385 



miscellanies. DOMESTIC AND FOREIGN. 



1. On the Meteoric Shower of November, 1836, - - 386 



2. Proceedings of the Maryland Academy of Science and Lite- 



rature, 1836, 395 



