Force of Steam. 
~—)} 
Second Class of Experiments. 
I filled the refrigeratory of a still, contain- 
ing exactly 300 ounce measures, with water, 
and noted the temperature. To the worm I 
fixed a flexible metal tube, which was screwed 
at the other end to one of the stop cocks of 
the boiler. I sent over steam from the boiler 
at different degrees of temperature, usually 
fillimg a6 ounce measure with the distilled 
water, and then trying the temperature of the 
water im the refrigeratory again, I observed 
how many degrees the 6 ounces of steam had 
raised the 300 ounces of water. 'The general 
result of these experiments is, that steam sent 
over at the common boiling temperature, or 
within a few degrees above it, gives out as 
much latent heat as steam sent over at a much 
higher temperature, and most probably at any 
higher temperature whatever. The following 
is a more particular statement of the two last 
experiments I made for this purpose. 
The refrigeratory was filled with 300 ounce 
measures of water at 55°. The thermometer 
in the boiler was then standing at 276°, and 
the stop cock being turned as little as possible, 
the steam was let into the worm; when 7 
ounce measures of condensed water had come 
