56 On the Chemical Writings of Scheele. 



There is no mis-statement by the translator, for the 

 experiment is precisely the same in the English and 

 French versions. To convince myself of the truth of 

 my suspicions, I detennined to repeat the experiment. 



A quantity of the flowers of sulphur was put into a 

 Florence flask, containing atmospheric air : a double 

 fold of bladder was well secured over the mouth of the 

 flask. The vessel was then exposed, in a sand bath, to 

 a temperature sufficient to melt the sulphur, and it was 

 kept in this situation for fifteen minutes. When cool, 

 the flask was inverted over water, and as soon as the 

 bladder was perforated, the water rose to a considerable 

 height : hence an evident diminution of the bulk of the 

 air, which was originally contained in the flask. 



The above experiment was repeated, and, by an ac- 

 curate calculation, the air suffered a diminution of one- 

 fourth of its bulk. The residuum proved to be azotic 



gas. 



Yours, Sec, 



Adam Seybert, 



XI. History of a Case of Scurvy, which occurred during 

 the Use of Vegetable Food. ^^ Caspar Wistar, 

 M. B., Adjunct Professor of Anatomy and Midwifery 

 in the University of Pennsijlvania : and by him com- 

 municated to the Editor. 



THE subject of this disease was a young lady, 

 of a delicate habit, who had been a long time afflicted 



