[ 352 ] 
all times ready to execute whatever you think pro- 
per to charge me with to the utmoft of my Abili- 
ties, I engaged in the more readily, from the Plea- 
fure and Inftru&ion I had already received from the 
Perufal of that excellent Work, in which its Au- 
thor has eminently diflinguifhed himfelf both as a 
Chcmift, and as a Philofophcr. 
This Work confills of 295 Pages in 8™, cxclu- 
five of the Preface, and of 6 Copper-Plates, exhibit- 
ing different Views of Salt-Houfes, Inftruments, 
ire. neceffary to the Preparation of Sak. It is en- 
riched likewife with Notes of great Importance to* 
the Work, not only of the Author, but alfo front 
the Bhilofophical Tranfacfwns, Medical Effays, 
Memoirs of the Royal Academy of Sciences at Baris, 
Rimy, Agricola , Alonfo Barba , Ramufio , Boyle , 
Hoffman , Lifter , Herrera , C D ampler, Baccius , Bo- 
met , Marfilli , Blot , Scheiichzer , Hales , Raft el, 
Leigh , Boerhaave, Shaw , and others. 
Amongft the vulgar Arts, that of preparing Sea- 
Salt for the Ufes of Mankind hath been thought 
worthy the notice of many great and learned Men, as 
well antient as modern. Thus many things relating 
to this Art are recorded by Cato and Bliny , Agri- 
cola and Hoffman, to whom our Author is much 
indebted for thofe Memoirs that have been tranf- 
mitted to us, relating to its Hiftory. Had thofe great 
Men been as diligent in improving this Art, as they 
were in recording the Improvements made therein 
by others, there would not now have been Occa- 
fion to remark, that, after the Practice of fo many 
Ages, an Art fo ftmple, and withal fo nccelfary, 
hath not yet been brought to any Degree of Per- 
fection. 
That 
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