Copy 2

An historical account of a new method for extracting the foul air out of ships, etc. with the description and draught of the machines, by which it is performed: in two letters to a friend / by Samuel Sutton.

  • Sutton, Samuel.
Date:
1749
Catalogue details

Licence: Public Domain Mark

Credit: An historical account of a new method for extracting the foul air out of ships, etc. with the description and draught of the machines, by which it is performed: in two letters to a friend / by Samuel Sutton. Source: Wellcome Collection.

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    the circulation of air is in propor¬ tion of the quantity of fire; the wider the tube, and greater the number of them, the lefs the velo¬ city of the air, and vice verfa. I feveral times took notice in this machine, when, for the fake of ob- fervation, after the fire was well lighted, the lowed; iron door was left open, that the flame did not af- cend lo high, or burn fo fierce; but immediately upon {hutting thereof, when the draught of air was only through the tubes, the flame foon recovered its former vigour. There is likewife, efpecially in large fhips, not only a copper, but alfo a fire-grate like thole ufed in kitchens : that the heat and finoke of this alfo may not be ufelefs, an iron tube may be fixed behind the grate, and inferted quite through the brick-work, and through the deck, fo that one end thereof will ftand