Page:Reflections on the Motive Power of Heat.djvu/168

144 corrected specification for the third operation: Let the piston be pushed down, till it readies a position E3 F3, determined so as to fulfil the condition, that at the end of the fourth operation the primitive temperature S shall be reached:

[During this operation the temperature of the contents of the cylinder is retained constantly at T°, and all the latent heat of the vapor which is condensed into water at the same temperature is given out to B.]

(4) The cylinder being removed from B, and placed on the impermeable stand, let the piston be pushed down from E3 F3 to its original position EF.

[During this operation, the impermeable stand preventing any loss of heat, the temperature of the water and air must rise continually, till (since the quantity of heat evolved during the third operation was precisely equal to