I. An experimental investigation of the thermodynamical properties of superheated steam.— On the cooling of saturated steam by free expansion

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Abstract
In a paper on the “Dryness of Saturated Steam and the Condition of Steam Gas,” read before the Manchester Literary and Philosophical Society on November 3, 1896, by Professor Osboene Reynolds, F. R. S., the following passage occurs, “The whole theory of the properties of steam, as at present accepted, and all the steam tables are founded on the experiments of Regnault on the total heat of evaporation, so that if any other definition is given of saturated steam than that which results from boiling the water under constant pressure after it has been drained of entangled water by gravitation, these properties and tables will not apply.” In the same paper Professor Reynolds describes a method of experimenting in which it is sought to determine whether, by sufficient wiredrawing of saturated steam at a known initial pressure and temperature, the steam could be finally brought into the condition of steam gas. Having undertaken the experimental verification of the conclusions given in Professor Reynolds’s paper, the author begs to point out the significance of the above extract in relation to any work which may be done in this subject, and to remark that it governs the methods and principles which have been adopted in the research, the results of which it is the object of this paper to describe.

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