PART I. CONTENTS. 



List of Officers for the year 1828, - 



Advertisement, 



Art. I. Table of Variations of the Magnetic Needle, co- 

 pied from one furnished by the late Gen. Schuyler to 

 S. De Witt, Surveyor-General, .... 



Art. II. On the luminous Appearance of the Ocean. 

 By Lieut. Thomas R. Ingalls, U. S. Army, Corres- 

 ponding Member, 



Art III. On the Geographical Botany of the United 

 States. Part 1. By Lewis C. Beck, M. D. 



Art. IV. On some Modifications of the Electro-Magne- 

 tic Apparatus. By Joseph Henry, - 



Art. V. Notes on Mr. Pickering's " Vocabulary of 

 Words and Phrases, which have been supposed to be 

 peculiar to the United States," with preliminary Ob- 

 servations. By T. Romeyn Beck, 



Art. VI. On the Uvularia Grandiflora, as a Remedy for 

 the Bite of the Rattlesnake. By James G. Tracy, 



Art. VII. An Examination of the Question, whether 

 the Climate of the Valley of the Mississippi, under 



