JB/106/011/003

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or boiling which
from Townsend?
certainly baking cheapest - Boiling heats a great superfluity of water. No use converting any of it into steam.

If the water
would not rise
- the higher or
much the higher
for the smallness
of the content of the
inferior part,
Valves and locks
would be of no
use: as the water
will not
sink but in
proportion as
it is drawn off
by the wicks &
replaced by the
air that rushes
in through them.

The use of
the cocks is to
make the vessl
air tight at
the height where
they are placed,
whereby the water
may be let
down below them
and so a greater
bulk of air be
subjected to the
flash.

But Quere,
whether there
can be any advantage
in that?
since by having
so much more air

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air below the
utmost you can
hope for is to
replace it with
an equal volume
of water, and that
you have already
On the contrary
you can hardly
expect to replace
with water above
half the bulk
of air

Mouths Number

the more cocks
the quicker the
water is drawn
of and the
quicker may be
the succession of
flashes, & the
more water drawn
up within a given
time.

A second flash
can not be made
without letting
in the air which
drives down the
water to the level
with the pond
unless detained
by Valves.

The use then
of valves is to
be secure the containance
of so
much water as
above them I deny

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Identifier: | JB/106/011/003"JB/" can not be assigned to a declared number type with value 106.
Date_1		Marginal Summary Numbering	1-6, 18-26
Box	106	Main Headings
Folio number	011	Info in main headings field	flash-pump
Image	003	Titles
Category	marginal summary sheet	Number of Pages	2
Recto/Verso	recto	Page Numbering
Penner	jeremy bentham	Watermarks	[[watermarks::l munn [britannia emblem]]]
Marginals		Paper Producer	benjamin constant
Corrections		Paper Produced in Year
Notes public	includes drawings	ID Number	34599
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