OP ARTS AND SCIENCES. 129 



flowed out, by one thermometer, which was then transferred to the 

 calorimeter as before. 



June 23. 



Water in A while running, 014.15 by No. 61 G3. 



Calor. before 1530.9 ; temperat. 281.1 by No. C166. 



" after 299G.3; " 328.4byNo.G16G; 272.7 by No. 6163. 



314.15 -4- .1 = 314.25 = 28°.526, or 28°.552 when corrected for stem. 

 281.1 -f .0 = 281.1 = 20°.2G2, or 20°.258 " " 



328.4 -j- -0 = 328.4 = 23°.945, or 23°.950 " " 



272.7 -4- .1 = 272.8 = 23°.960, or 23°.9G6 " " 



Specific heat between 20° and 24° oqqq 



Specific heat between 24° and 29° 



June 23. 



Water in A while running, 383.9 by No. 6163. 



Calor. before 1G24.9 ; temperat. 286.75 by 6166. 

 " after 3048.2; " 392.45 by 6166, and 318.1 by 6163. 



383.9 -f- .1 = 384.0 = 36°.303, or 36°.357 when corrected for stem. 

 28G.75 -j- -0 = 286.75 = 20°.702, or 20°.700 « « 



392.45 -f -0 = 392.45 = 28°.954, or 28°.980 « 



318.1 +.1 = 318.2 = 28°.9G4, or 28°.992 



Specific heat between 21° and 29 c 



Specific heat between 29° and 3G° 



= .9954. 



To test the apparatus, and also to check the estimated specific heat 

 of the calorimeter, the water was almost entirely poured out of tho 

 calorimeter, and warm water placed in the vessel A, which was then 

 allowed to flow into the calorimeter. 



"Water in A while running, 309.0 by No. 6163. 



Calor. before 391.3 ; temperat. 314.5 by 6166. 



" after 3129.0; " 308.3 by 6166, and 378.5 by 6163. 



Air about 21° C. 



Therefore, water lost 0°.078, and calorimeter gained 5°. Hence 

 the capacity of the calorimeter is 39. 



Another experiment, more carefully made, in which the range was 

 greater, gave 35. 



vol. xv. (n. s. vii.) 9 



