[ 43 ] 
The. reverend Dr. Hales and I being confuited by 
the committee upon the point referred to them, and 
having villtcd the gaol in company with thofe gentle- 
men, it was then agreed, that, confidering the fmall- 
nefs of the place, in proportion to the number of the 
prifoners, it would be proper to make a farther trial 
of the ventilator, and to have it worked by a machine, 
in the manner of a windmill, to be ereded for that 
purpofe upon the leads of Newgate. 
This fcheme was laid before the court of aldermen, 
and approved of, but not put in execution till near 
two years after. For on the n of July i/f2, Dr. 
Hales acquainted Dr. Knight and me, that feveral 
of the tubes were finifhed, and that the machine had 
been going about fix weeks ; wherefore, being de- 
firous to fee the effeds, he had appointed Mr. Stibbs 
the carpenter, employed in that work, to meet him 
that day at Newgate, and defired us to go along with. 
We went accordingly, and having vifited feveral of 
the wards, we were all of us very fenfible, that fuch as 
were provided with ventilating tubes were much lefs 
offenlive than the reft that wanted them ; and Dr. 
Hales and I could perceive a confiderable improve- 
ment made upon the air of the whole gaol, fince the 
time we had been firft there with the committee. 
Some of the wards were fo free from any fmell pe- 
culiar to fuch places, that I am perfuaded, were Dr. 
Hales’s defign completed, and a perfon appointed to 
regulate the Aiders of the tubes, and to keep the ma- 
chine in order, the ufual bad confequences from foul 
and crouded goals, might in a great meafure, if not 
wholly, be prevented in Newgate. 
F 2 
One 
