Bakerian Lecture: On the Variation of the Specific Heat of Water, with Experiments by a New Method . equivalent of the calorimeter and of itsvariation with temperature is not required provided that the conditions are fairlysteady. There is no uncertainty of heat-loss in transference, or by evaporation, aswith an open calorimeter. It is also easy, by a suitable arrangement of the flow-tubes, to reduce the external heat-loss almost to a vanishing quantity without theemployment of vacuum-jackets or elaborate precautions in lagging. The method HEAT OF WATER WITH EXPEEIMENTS BY A NEW METHOD. 15 req
Bakerian Lecture: On the Variation of the Specific Heat of Water, with Experiments by a New Method . equivalent of the calorimeter and of itsvariation with temperature is not required provided that the conditions are fairlysteady. There is no uncertainty of heat-loss in transference, or by evaporation, aswith an open calorimeter. It is also easy, by a suitable arrangement of the flow-tubes, to reduce the external heat-loss almost to a vanishing quantity without theemployment of vacuum-jackets or elaborate precautions in lagging. The method HEAT OF WATER WITH EXPEEIMENTS BY A NEW METHOD. 15 requires considerable variation in detail to suit different ranges of temperature, and isin some ways less direct than the electric method, but it is peculiarly suitable as ameans of independent verification. General Arrangement of the Apparatus. The continuous-mixture method was primarily designed for determining thevariation of the total heat of water at temperatures above 100° C, where thecontinuous-electric method appeared to present greater difficulties. But, as the BOILER HEATER 80° C ...^^. COOLERTANK G JL -l-Gh* Jl • arrangements for this were not complete, it was decided to apply the method in thefirst instance as an independent test of the accuracy of formula (6) over the range60° C. to 100° C, where it differed most widely from those of LfJDiN and arrangement adopted for this purpose will be readily understood from thediagrammatic scheme in fig. 4. 16 PEOF. H. L. OALLENDAR ON THE VARIATION OF THE SPECIFIC The current of air-free distilled water is supplied from a boiler C in which thelevel is kept conntant by means of a float-feed B, from an auxiliary tank A, maintainedat a temperature of about 80° C. From the boiler the current passes with a fall ofabout 15 feet to a reservoir D^ surrounded by a steam-jacket, in which it is again raised to the boiling-point before entering the exchanger is an air-trap at the top of the reservoir D, andsimil
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