The object of this communication is to introduce a new unit of power which, if adopted, will afford a basis of comparison of all converters of energy, thermal and mechanical; and also will be international in its character, as it is merely a new multiple of the watt. In American and European practise, at the present time, there are in use many empirical units, the use of any one of which is restricted to a distinct territory. A few of the more important ones are, horse power, boiler horse

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... kilowatt, cheval a vapeur, pferde-kraft and poncelet. Obviously an engineer, in attempting to compare data from a foreign country, is compelled to face a confusion of terms, which usually can be made intelligible only by laborious calculations. Again, in the United States there are in vogue such units as l)oiler horse ptO\vTe ad1(1 horse powter, which, while siinilar in s0tl-ln(, hasve iio lo)gi(al connection; anid olne has yet to find wrhere the horse comles ln. Witi thle raipi( (1c\dee 1 )11nent in electrical lmeasuring instrtiments, and(1, uintil recently" a corresp)ond(1ing lack of development in steam-flow measuringinstruments, the term kilowatt has become more and more used as the one unit of power output. The term became a necessity with the growing favor of steam turbines, and all direct-connected units where it is impossible to measure accuratel tlhe mnechanical and the electrical power separately. ITo Iurtil Il h1C\\:C il i 0\\'t-t'l i,e bilcl-r o pr(t(llcer 0ouItplUt, tlle enlg'-ineO andigttir'llat or outlptt, t,he termi " lyllriawat.t 4fIL