120 Disinfecting Powers of Increased Temperatures. 
sketch, admits either of one half or the whole of the cover being re- 
moved at pleasure. From this cover, towards the right, a pipe A 
proceeds, the only object of which is to carry into the flue of the 
chimney any infectious effluvia that may possibly escape undecompo- 
sed. The thermometer is introduced occasionally through a slit in 
the other half. The small air cock A, which is removable at pleas- 
ure, passes through an aperture in the same half of the cover; and 
when open establishes a communication between the space DD and 
the atmosphere. ‘The whole vessel rests ona table EE (the legs of 
which are represented as if broken off,) hollowed out to receive it. 
To this table the vessel is fastened by four small bolts, the extremi- 
ties of two of which are shown by the sketch. ‘To give a hold to 
the heads of these bolts, a flanche is soldered near the bottom of thé 
outer vessel, which has also a corresponding flanche at the top, for the 
purpose of keeping the packing in its place. 
A. 
Lnchies 
The small boiler G has a movable lid, from the center of which 
issues a pipe FF, five or six’ feet long, or any other convenient 
length, which slips over the pipe that descends from the steam-ves- 
sel. To bring the drawings into less space, this pipe is represented 
with a part broken off. The dimensions of every part of the appa- 
ratus are given by the scale, annexed to the sketch. 
The vessel G is to be filled about two-thirds with water, which to 
save time, may be nearly boiling at the outset. Being set over a 
fire, and the joints that require it having been made good by flour- 
