and Apparatus for producing Water. &9 
tion, is foldered the tube GG, which touches the infide of 
the cylinder H, and is made faft at the top by a piece of 
brafs, which is fcrewed to the interior edge of the cylinder 
by two fcrews, the heads of which are feen at K.. As foon, 
therefore, as > is fhut, the crooked pipe FE is to be ferewed 
to GG and the cock B. The cock B is fhut, the {crew 7 is 
to be unferewed to open the tube at that place, and water 
poured by means of a funnel into the orifice thus opened. 
“As foon as the pipe EF is full, the orifice is again fhut. 
The cock 4 being then opened, and afterwards B, fo much 
water runs from H, through the fyphon GF EJ, that A will 
be completely filled, if care be taken, by opening the cocks 
N and P, that the water in H ftand always higher than that 
in A. To haften the filling of the glafs A, it will be con- 
venient to fill the cylinder H almoft entirely. 
In order that the bent pipe EF may be faftened air tight to 
the cock B, and the tube G G, without turning it round, each 
end of EF is ground to fit conically the places intended tore- 
ceive them, and is prefied home by the following contrivance: 
Fig. 2. reprefents a fection paffing through the axis of this 
part of the apparatus. The part aa, which is furnithed 
with a fhoulder, is flipped into the hollow c of the cock B; 
and the female fcrew dd, by means of its fhoulder ff, when 
turned upon the ferew ¢e, prefles the conical part aa into ¢. 
The conical piece of the other end F of the pipe EF, is ad- 
jufted in the fame manner into a piece of copper foldered to 
the tube GG. All the tubes of this apparatus are adjufted 
to their refpective cocks in. the fame manner. It will be 
fufficient to. ereafe flightly the furface of any of thefe conical 
pieces, before it is put in its place, to prevent all communi- 
cation with the air of the atmofphere. 
The balloon, for the compofition of water, placed upon its 
tripod between the gazometers, differs from that of Lavoifier, 
principally in the manner,of {hutting it in order to prevent 
the entrance of air., For this purpofe there is a rim of 
‘ae aa (fig. 3.) fixed on the neck of the balloon, by 
means 
