170 



Essai 



cJcs El. 



de Boston 



er price. Besides, tlie manufacturer; and the mercliant 

 will never be doubtful of their adventures. And the repu- 



of Am 



pot ash will b 



if not superiour 



to any th^t is manufactured in Europe. 



The subject of pot ash making has frequently been before 

 the legislature; and applications made for premiums; by 

 people, who have no doubt acquired useful knowledge in 

 the business. This circumstance, and a wish to render ser- 

 Tice to tlie publicly are the only motives which have mduc- 

 cd me to commit these observations to the Academy. I have 

 endeavoured to avoid prolixity^ and all chemical terms^ as 



I wish to be understood by people concerned in^tl 

 of business ; all of whom may not have had the 

 obtaining a perfect knowledge of them/ 



branch 

 sans of 



^Q 



XXV. Second Essai sur cles Eaiix de Boston, Par 3£ FEEON. 



OESQUE 



jai 



eu riionneur d 



emie mon essai sur les 

 decouvert aucune substance 



communiquer a V Acad 

 de Boston, j'ai dit n'avoii 



m^talliq 



.¥ 



on 



communique, que certaines 



Depuis ce terns, 

 de Boston avoient 



des qualites particulieres, telque de jaunir, noircir, et avoir 



mauvals gout, &c 



Celles 



sont, celle de M. TT 



que je connois jusqu'a present 



'iliam Greenleaf, a cote de son magasin, 



dans 



XXY. Second Essay on lie Boston Pump Waters. By M. FEROX. 

 TF^IIEN I Lad the Iionour of communicating to tlie Academy my essay on tlie 

 ' T -vvaters of Boston, I observed, tliat I Lad not discovered any mctallick impregna- 

 tion. ^ Since that time, I Lave been informed, tLat some of the springs in that toTvn had 

 certain particular qua^^^Ies, such as of staining yellow and black, and that they had an 

 nnplcasant taste. TLo.e 1 refer to now, arc Mr. Greenleaf. well, near his store, in 



the 



i 



