C *8 3 
portion to the Size of the Ship, and Number of the 
Crew : This Copper is fixed in Ships in the Manner 
as on Land, having under it Two Holes divided by an 
iron Grate. The firfi: Hole, having an iron Door, is for 
the Fire 5 the Afhcs from the Grate drop through into 
the Bottom of the other; the Smoke paffes through 
a Chimney, and is difeharged as ufual. After the Fire 
is lighted, it is fupported by the Air from the Parts 
next the Afh-pit; but having, contrary to the ufual 
Cuftom, adapted an iron Door, like the former, 
made very tight, to prevent the Ingrefs of Air, the 
Fire would foon be extinguifhed, if not fupplied by 
fome other Aperture ; in order to which, one or 
more Holes are made through the Brick-work in the 
Side of the Afh-pit,* and Tubes of Lead or Copper, 
fitted clofely in the Holes, and made faft, are laid 
from thence into the Well, and other Parts of the 
Ship ; by which means the Air next the Bottom of 
the Tubes rufhes through them, and the foul and 
ft inking Air fucceeding is tranfmitted through the 
Fire, and pafics off, without offending, by means of 
the Chimney; and a Supply of frefh Air from the 
other Parts of the Ship continually fills the Place of 
the former, the Fire requiring a conftant Supporr, 
which Support will be wanting, not only during the 
Continuance of the Fire, but while any W armth 
remains in the Fire-place, Copper, or Brick-work, as 
was obferved on board the Hulk at ‘Deptford , where 
the Draught of Air through the Tube lafted above 
Twelve Hours after the Fire was taken away. This 
being confidered, as the drefling the Provifions for a 
Number of People will take up fome Hours every 
Day, the Warmth of the Brick- work and . Flues will 
con- 
