[ 355 ] 
What Mr. Lowndes * hath lately done towards 
the Improvement of Brine-Salt, may, perhaps by 
fome, be thought to fuperfede the Necefllty of fur- 
ther Attempts for improving and extending our 
Salt Manufacture. Dr. Brownrigg is very far from 
depreciating the Endeavours of that Gentleman, 
which have met with Parliamentary Encourage- 
ment 5 and had his Difcovery appeared to the Doc- 
tor fufficiently complete and extenfive, he would 
not have given the Public and himfclf this Trouble. 
He makes no Doubt but that the Specimen of Salt, 
which Mr. Lowndes exhibited before the College 
of Phyficians, was a ftrong and pure Salt, fince fuch 
it appeared to that mod learned Body. Whether 
the Alum mixed with it (agreeable to the antient 
Practice of the Chejhire Salt boilers) contributed any 
thing to its Goodnefs, is more properly confider’d 
hereafter. It is only neceffary here to obferve, in 
Juftification of the prefent Undertaking, that Mr. 
Lowndes % Method of making Salt for curing Pro- 
vifions, doth not appear to be the befi that may be 
put in Practice; fince our Author hopes to fhew, 
thar, by other Methods, a purer and a Wronger Salt 
may be made, and at a lefs Expence. Neither is 
his Method fo general and extenfive as feems to be 
required for the public Good 5 fince Mr. Lowndes 
confines it almoft intirely to boiled Brine-Salt; and 
hath given no Directions concerning the Preparation 
of Bay-Salt. He indeed propofes to meliorate the 
Britifh Sea-Salt, but feems to defpair of preparing 
a Salt either from Sea-Water, or Englijh Rock-Salt, 
fit 
* Mr. Lowndes ’ s Proccfs is inferted in this Work, See/*. 104 et fej. 
