A treatise on ventilators Wherein an account is given of the happy effects of the several trials that have been made of them, ... Part second. By Stephen Hales, ...
Hales, Stephen,1677-1761.
London : printed for Richard Manby,
1758.
A continuation of the author's 'Description of ventilators', 1743.
At foot of p.1: 'Vol.II.'.
Paragraphs numbered 237-731.
With an index.
ESTC