[ 34-4 ] 
64. I am credibly informed, that in the places 
famous for making the heft frefh winter butter, 
they fet the pot of cream in warm water, fo long as 
till it has acquired that fmall degree of fournefs, 
which it very foon has in warm fummer weather, 
which gives it its agreeable flavour. And in order to 
give it colour, they grate a well-coloured carrot into 
a little milk, which, as foon as ftained, is drained 
from the carrot through a fleve, and then mixed with 
the cream. 
6y. It is found by experience, that the quantity 
of cream is increafed, by putting into the milk a 
little warm water in winter, and cold in fummer ; 
which being thereby 'in fome degree thinned, the 
cream is thereby more eafily difintangled, fo as more 
freely to afcend to the furface of the milk. 
66. I ventilated three gallons of {linking JefTops- 
well purging water. On firft blowing, the fmell of 
the afcending vapour was very offenfivc, which ofl-’en- 
fivenefs abated much in five minutes : In eleven mi- 
nutes the fmell was much better : In twenty minutes 
the water feemed fweet both in fmell and tafte; and 
not fweeter at the end of forty- five minutes, fifteen 
or twenty minutes will probably fiiffice. 
67. July 2oth, three gallons of {linking fea- water 
were ventilated ; in five minutes it was much fweet- 
ened, and no ill fmell in the afcending air, though at 
firfi it was very offenfive : At the end of ten minutes 
it had a fmall degree of ill tafte ; after twenty mi- 
nutes no ill ta{le or fmell. It frothed near a foot 
high during part of the ventilation: This from the 
bitumen, ^-c. 
68 . Some 
