ON THE MECHANICAL EQUIVALENT OF HEAT 



393 



Time. Ther. 6163. Ther. 6166. 



44i-44f Water running. 



46* 218-7 251-7 



47* 218-8 251-8 



48* 218-9 252-0 



Temperature before 296-6 

 Correction for + -2 



296-8=26-597 



Correction for stem + '019 



Initial temperature of 



calorimeter 26-616 



218-6 + -2 = 218-8 = 17-994 

 Correction for stem -006 



Points. 



Calorimeter before 2043-0 



" after 2853'3 



Water at added 810-3 



Thermometer 1-1 



Total at 8114 



Calorimeter before 2043'0 



Weight of Vessel 388-3 



Water 1654-7 



Capacity of calorimeter 35-4 



" thermometer 1*1 



Total capacity 1691-2 



251-6 - 1 = 251-5 = 17-962- 



Correction for stem -006 



17-956 



17-988 

 Mean temperature of mixture, 17 -972. 



Mean specific heat 18 _ 1691-2 X 8-644 _ 

 Mean specific heat 18 27 ~~ 811-4 X 17'972 



June lit. Second Experiment 



Calorimeter before 2016-3; temperature 361-4 by No. 6163. 

 Calorimeter after 3047-0; temperature 244-5 and 288-7. 



Air, 21 C.; jacket about 27. 



361-4+ -2 = 361-6 = 33-803, or 33-863 when corrected for stem. 

 244-5 -|_ -2 = 244-7 = 20-865; no correction for stem. 

 288-7 1 = 288-6 = 20 -846; no correction for stem. 



Mean, 20 -855. 



Mean specific heat between and 21 _ ^.QQgg 

 Mean specific heat between 21 and 34 



June l-'f. Third Experiment 



Calorimeter before 1961-8; temperature 293-6 by No. 6166. 

 Calorimeter after 3044-6; temperature 243-7 and 213-0. 



Air and jacket, about 18 C. 



