and other Parts of India. "yg 
the fuperior excellence of thefe ftills and furnaces, nor from 
their better mode of conducting the diftillation in any re- 
fpect; but chiefly rather from es greater fkill and care in 
the right choice and proper management of the materials 
they Papier in fermentation; and, above all, as I appre- 
hend, from the vaft convenience ‘they have in cafks, by 
which, and from their abilities in point of ftock, they are 
enabled, and do in fact, in general, keep their {pirits for a 
certain time, whence they are mellowed, and improved fur- 
prifingly both in tafte and falubrity. 
All I need further add with refpe& to diftillation, and on 
the fuperior advantages in the mode of conducting it here, to 
that we have been in ufe to, employ, for the raifing of {pirits, 
fimple waters, and the like, is only to obferve, I have no fort 
of doubt but that the intelligent chemical operators at home, 
if ever they fhould get a hint_of it, will make no mauner of 
feruple to ufe it alfo, and to improve upon it greatly by a 
few ingenious contrivances, which their knowledge and ex- 
perience will fo eafily fuggeft. The principles on which it 
feems founded, indeed, binecrally with regard to their way 
of cooling, are fo ftriking and juft, that in many other di- 
fiillations befides, thofe of fpirits and waters, they may be 
employed, I apprehend, with very great profit and advan~ 
tage. I fhall now, however, confine myfelf to mention only 
the benefit that may refult from a like procefs in the raifing 
of the finer aromatics, while the heat contrived, as in our 
way, befides impeding the diftillation, muft, from its long 
action on fuch fubtile bodies, probably injure them greatly 
in the effential quality on which their excellence depends ; 
and upon this very account Iam apt to imagine that the 
greater quantity obtained, and the fuperior quality of the oil 
of rofes made in this country, to that made from roles with 
us, is owing chiefly, if not entirely, to their better and more 
judicious manner of extracting it here. For with us, the 
ftill, being made of metal, may, in the firft inflance, impart 
too great and too fudden a degree of heat; and next, the 
oil continuing fo long in the vapour, and that much com- 
prefled, may, in fo delicate a fubjecét, not only entirely 
almofi unite it with the water, fo as to render the fepara- 
tion 
