ON THE MECHANICAL EQUIVALENT OF HEAT 395 



347-8+ -0 = 347-8 = 25 -457, or 25-471 when corrected for stem. 

 234-5 + -0 = 234-5 = 16-643, or 16-636 when corrected for stem. 

 206-6 + -1 = 206-7 = 16-651, or 16-644 when corrected for stem. 



Mean, 16 -640. 



Specific heat between and 17 _ .99971 

 Specific heat between 17 and 25 ~~ 



Eejected because dew was formed on the calorimeter. 



A series was now tried with both thermometers in the calorimeter 

 from the beginning. 



June 25 



Calor. before 2220-3; temperat. 325-6 by No. 6166; 309-9 by No. 6165. 

 Calor. after 3031-4; temperat. 233-4 by No. 6166; 224-6 by No. 6165. 



Air, 24 -2 C.; jacket, 23 -5. 



325-6 + -0 = 325-6 = 23-725, or 23-726 when corrected for stem. 



309-9 + -2 = 310-1 = 23-739, or 23-740 when corrected for stem. 



233-4+ -0 = 233-4 = 16-558, or 16-545 when corrected for stem. 



224-6+ -2 = 224-8 = 16-562, or 16-549 when corrected for stem. 



Means, 23 -733 and 16 -547. 



Specific heat between and l' _ 

 Specific heat between 16 and 24 ~ 



June 25 



Calor. before 2278-6; temperat. 340-35 by No. 6166; 324-1 by No. 6165. 

 Calor. after 3130-2; temperat. 242-5 by No. 6166; 232-8 by No. 6165. 



Air, 23 -5 C.; jacket, 22 -5. 



340-35 + -0 = 340-35 = 24 -877, or 24 -881 when corrected for stem. 

 324-1 +-2 = 324-3 = 24 -899, or 24 -903 when corrected for stem. 

 242-5 + -0 = 242-5 =17 -264, or 17 -253 when corrected for stem. 

 232-8 + -2 = 233-0 =17 -261, or 17 -250 when corrected for stem. 



Specific heat between and 17 _ i . 

 Specific heat between 17 and 25 



Calor. before 2316-35; temperat. 386-1 by No. 6166; 368-4 by No. 6165. 

 Calor. after 2966-90; temperat. 295-4 by No. 6166; 281-7 by No. 6165. 



Air, 23-5C.; jacket, 22 -5. 



