[ r 43 ] 
the air is to be transferred ; the mouth of which is lifted 
up till the air runs out of it into the funnel, and from 
thence into the bottle A. 
In order to transfer air out of a bottle into a bladder, 
the contrivance Fig. 3. is made ufe of. A is the 
bottle out of which the air is to be transferred, in- 
verted into the velTel of water FGHK: B is a 
bladder whofe neck is tied faff: over the hollow piece 
of wood Cc, fo as to be air-tight. Into the piece of 
wood is run a bent pewter pipe D, and fecured with 
lute*. The air is then preffed out of the bladder as 
well as poffible, and a bit of wax E ifuck upon the 
other end of the pipe, fo as to flop up the orifice. 
The pipe, with the wax upon it, is then run up into 
the inverted bottle, and the wax torn off" by rubbing it 
againff: the ffdes. By this means, the end of the pipe 
is introduced within the bottle, without buffering any 
water to get within it. Then, by letting the bottle 
defcend, fo as to be totally immerfed in the water, the 
air is forced into the bladder. 
The weights ufed in the following experiments, 
are troy weights, 1 ounce containing 480 grains. By 
an ounce or grain meafure, I mean fuch a meafure as 
contains one ounce or grain Troy of water. 
* The lute ufed for this purpofe, as well as in all the following 
experiments, is compofed of almond powder, made into a pafle 
with glue, and beat a good deal with a heavy hammer. This is 
the ilrcngeft and mod convenient lute I know of. A tube may be 
cemented with it to the mouth of a bottle, fo as not to fuftt-r any 
air to efcape at the joint; though the air within is comprefied by 
the weight of feveral inches of water. 
Exfe- 
