All concerning "the good effect of
Ventilators" on ships and their
financial and health benefits.
Hales stresses cost savings
from the slower decay of timber.
All addressed to William
Wildman Barrington, Viscount
Barrington (1717-1793).
With: ALS from William Wallace to
Lord Barrington; Admiralty Office,
1752 Sep 22, enclosing drawing
of a section of the Sheerness outfitted with Hales's ventilator.
Acc.: 03.8.7