ON THE TOTAL HEAT OF STEAM. 



101 



1 Time 



Weight 



Temperature 











1 during 



of water 



of water. 



Weight 









H which 

 8 the 



in can, 

 including 



-' . 



of 

 steam 



Total pressure 



of steam 



in inches 



of mercury. 



Total heat 



Reg- 



i steam 



can 







con- 



of 



natilt's 



was 



reduced 



Before 



After 



densed 



steam. 



result. 



intro- 



to 



,'experi- 



experi- 



in 







duced, in 



sp. heat 

 of water. 



ment. 



ment. 



grains. 









minutes. 











m^^,„ 







W. 



t. 



t'. 



«.'. 







2 



14035 I 



6-362^ 



43'443° 



8700 



40-0 - 





641-64^1 





2i 



14035 I 



6-587° 



56-936° 



12089 



36-4 





641-48 





? 



14035 I 

 14035 I 



6-457° 

 4*893° 



58-785° 

 43592° 



12577 

 9205 



3695 

 38-25 



^37-25 



tfrli ^'^*-« 



638-77 



22 



14035 I 



5-096° 



53-909° 



I1686 



36-1 





640-16 





2 



14035 I 



5'i39° 



52-814° 



"574 



35-8 J 





630-94J 





2 



14035 I 



6-384° 



48-228° 



9835 



57-3 1 





645-37I 





2 



14035 I 



6-54° 



58-325° 



12418 



57-6 





643-61 





3 



2 



14035 1 

 140351 



6'399° 

 6-54° 



55-083° 

 48-048° 



11609 



9775 



52-2 

 54-6 



■57-52 



643-66 , 



6ll-o3|-'^^-" 



642-87 



2 



140351 



5-096° 



58-347° 



12800 



60-3 





642-24 1 





2 



14035 1 



5"37i° 



56-523° 



12103 



63-1 J 





649-70 J 

 651-02 1 





2 



14035 1 



6-529° 



63-043° 



13490 



105-1 







2 



14035 I 



6-684° 



58-835° 



12272 



117-37 





655-27 1 





2 

 2 



14035 1 

 14035 1 



6-684° 

 5'342° 



55-285° 

 53-257° 



11276 

 11191 



ii5'3 

 109-2 



s- III-58 



660-21 I , . 

 654-18 ^^55-45 



649-6 



2 



14035 I 



5'574° 



54-033° 



1 1 266 



II2-6 





657-83 





2 



14035 1 



5'5i6° 



64-891° 



14141 



109-9 , 





654-2 J 



! 



In the above experiments the steam was condensed at 

 twice the rapidity it was in those of Eegnault. I had also 

 an advantage in the size of my boiler^ which was eight feet 

 high by two feet ten inches in diameter, whereas his was 

 only two feet seven inches by two feet one inch in diameter. 

 Owing, however, to the small number of my experiments, 

 the results at which I have arrived can only be regarded 

 as confirmatory of those of the French physicist. I be- 

 lieve, nevertheless, that the simple method I have adopted 

 may be resorted to with advantage whenever it shall be 

 required to obtain a further increase of accuracy. 



