INTRODUCTION. 



Then q - / + I kdt 



v, hi. h may be obtained by plotting values of k as ordinates and ime- 



rig grapi hiiii will have the advantage that the required 



may be drawn to a large scale and give correspondingly accurate 



results. The values for (he ln-.it of the liquid for water in the tables 



obtained in this way. 



ng table gives equations for the heats of the liquid for 

 various substances as di I by kegnault : 



l!> \i o 



Alt- . . q - 0.54754* +O.OOH218/* 4- O.OOO002200/* 



Kth . . q - 0.5290I/ + O.0002959/ 



roform . . . . q - 0.23235* -f o.oooosoy/ 1 



Carbon bisulphide . q - 0.23523* -f 0.000081 5^ 



Carbon tetrachloride q - 0.19798* + 0.0000906^ 



Aceton . q - 0.50643* + 0.0003965^ 



Total Heat. - ThU trrni is defined as the heat required to raise a unit 

 ight of water from freezing-|>oint to a given temj>erature, and to 

 entin at that temperature. The experiments made by 



Regnault am was led from a boiler 



into the lalorinn-ter and there fondensed. Knowing the initial and final 

 weights of the calorimeter, the temperature of the steam, and the initial 

 and final temjKTatures of the water in the calorimeter, he was able, after 

 applying the necessary corrections, to calculate the total heats for the 



As a conclusion of the work, he givc^ the following values for the total 



10 610 By equation, 609.6 



63 625 62; 



100 637 



1950 



Assuming an equation of the form 



// ,1 -f- Bl, 



Regnault calculated the constants from the values given for 100 and 195, 

 and gives the equal 



// - 606.5 + O.305/. 



