VI 



VI. On the Poisonous quality of a species of West-Indian Fish. 

 Communicated to the Editor, by Dr. Frederick Detlef Meyer. 

 With Remarks, by the Editor. 



VII. On the Salivating and other effects of the Digitalis Purpurea, 

 in a case of Dropsy. Communicated, in a letter, to the Editor, 

 from Dr. Enoch Wilson, of Hights-Town, in New-Jersey. 



VIII. Hints relative to the Medical Properties of the Hypericum 

 Perforatum, or common St. John's-Wort. Communicated in a 

 letter to the Editor, from his Brother, William Barton, Esq., of 

 Lancaster, in Pennsylvania. With Remarks, by the Editor. 



IX. Additional Observations on the Falls of Niagara, and parti- 

 cularly on their (supposed) original position. In a letter to the 

 Editor, from Mr. Felix Robertson (of the State of Tenessee), 

 Student of Medicine in the University of Pennsylvania. 



X. Medical Facts and Observations, on several subjects. Ex- 

 tracted from a letter from Dr. Lemuel Kollock, of Georgia, to 

 Dr. William Currie, of Philadelphia. Communicated to the 

 Editor, by Dr. Currie. 



XI. Extract of a letter from Dr. Currie to the Editor, giving 

 some account of the deleterious effects of the Spigelia Marilan- 

 dica, or Carolina Pink-Root, in two cases. 



XII. Notice of the Epidemic Fever, which prevailed in York- 

 Town, and the adjacent country, in the autumn of 1804. In a 

 letter from Dr. John Spangler, to Dr. Currie. Communicated 

 to the Editor, by Dr. Currie. 



XIII. On the Use of Issues, in the Cure and Prevention of Dis- 

 eases. In a letter to the Editor, from Mr. James W. Stevens. 



XIV. Observations and Conjectures relative to the sufifioscd 

 Welch-Indians, in the western parts of North-America. Re- 



