Vll 



published from the " Kentucky Palladium." With additional 

 Remarks and Conjectures, by the Editor. 



XV. Experiments on the Gymnotus Electricus, or Electrical Eel, 

 made at Philadelphia, about the year 1770, by the late Mr. 

 Rittenhouse, Mr. E. Kinnersly, and some other gentlemen. 

 Communicated to the Editor of this Journal, by Mr. Ritten- 

 house. 



XVI. On the Use of the Prinos verticillatus, or Black-Alder, in In- 

 termittent-Fevers, and other diseases. In a letter to the Edi- 

 tor, from Dr. Amos Gregg, jun., of Bristol, in Pennsylvania. 



XVII. Description of an American Species of Certhia, or Creep- 

 er. Illustrated by a Plate. Communicated to the Editor, by 

 Mr. William Bartram. With Remarks, by the Editor. 



XVIII. Facts relative to the torpid state of the North-American 

 Alligator. By the Editor. 



XIX. On the Powers of Steam, in communicating heat to bodies, 

 with which it comes in contact. By Robert M'Causland, 

 M. D., and by him communicated to the Editor, in 1787. 



XX. Observations relative to the Wheat-Moth of Pennsylvania, 

 and other parts of the United-States. In a letter to the Editor, 

 from Mr. William Mason Walmsley, of Byberry, in Pennsyl- 

 vania. With Observations on various Species of Insects, by 

 the Editor. 



XXI. Conjectures relative to the Scite of Bristol, in Pennsylvania. 

 Communicated to the Editor, by Mr. William Bartram. With 

 a Note, by the Editor. 



XXII. Meteorological Observations, made at Gnadenhutten, on 

 the River Muskingum, at the distance of about one hundred 

 miles west of Pittsburg (in Pennsylvania): begun May 20thj 

 1800. Communicated to the Editor, by Mr. John Ilecke wel- 

 der, formerly of Bethlehem, in Pennsylvania. 



