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3 45 



MISCELLANEOUS PAPERS. 



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irsarlLes, the air was conftantly charged with a grofs pii- 

 treicent fluid. Hence a fcrles of irregular, nervous, bili- 

 ous, remitting and intermitting fevers, which for many 

 years have maintained a fatal reign through many parts of 

 this country, but are now evidently on the decline. Pleu- 

 ritic and other inflammatory fevers, with the feveral dif- 

 eafes, of cold feafons, are alfo obferved to remit their vio- 

 lence, as our winters grow more temperate. 



Since the cultivation of tlie colonies, and the confequent 

 change of climate, has fuch eflFe6ts on the difeafes of the 

 human body, and muft conlinue to produce fuch remarka- 

 ble changes in their appearance, it is certainly the duty of 

 every phyfician, to be careful to trace the hiftory of every 

 difeafe, obfervc the feveral changes they undergo, and- 

 mark, with a jealous attention, the rife of every new dif- 

 eafe, which may appear on the decline of others, that fo 

 he may be enabled to bring efFe£tual and feafonable relief 



to fuch perfons, as may be committed to his care. 



rrf^ 



Sect. III. 



MISCELLANEOUS PAPERS. 



dn account of the Eruption of VESUVIU Sy in 1767, 



' communicated in a letter from an Englijh gentleman re- 



ftding at Naples^ to JoiiN Morgan, M. D, F, i2. S. 



and Profeffor of Medicine in the College of Philadelphia. 



Naples, Nonjemher 3, 1767. 



S I R, 



w 



E have had a moft extraordinary eruption of Vefu- 

 vius lately. As I imagine an account of the dif- 

 turbance it has given us will hot be difagreeable to you, I 

 {hall therefore do myfelf the pleafure of communicating to 

 you what I knowj and have feen myfelf, of this furprifing 

 phsenomenoa. 



The 



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