R. Bunsen — Calorin 



Substances. 



Icee.o..e. 



Regnault. 



a.h. 



Water, - - - 



Silver, - - • - 



Zinc, - - - . 



Antimony, 



Cadmium, - - - 



Sulphur, - - . 



0-0559 



0-0495 

 0-0648 

 0-1712 



0-0570 

 0-0956 



0-0567 



-0-0011 

 -0-00-21 

 -0-0014 



-0-0052 



It will be seen that the values obtained with the ice calorime- 

 ter agree very closely with those obtained by Eegnault by 

 means of the method of mixture, but have always been found 

 somewhat smaller. Whether this constant deviation has its 

 origin in the difference in the methods employed can be the 

 less decided from these few experiments as they were conducted, 

 to be sure with the avoidance of all considerable sources of 

 eiTor, but without special care, while I was at the same time 

 occupied in other labors. 



The following table 6, contains experiments made with seve- 

 ral pure elements wliose specific heats could not previously be 

 determined. The specific heats and atomic heats calculated 

 therefrom, are arranged together in table 7. 



substance investigated. 





lacUum. 



indlun.. 



^-^-^- : CalciuM 



CaU-i,.. ■■ 



Weight Of the substance 



G 



1-1514 



1-1514 



: 



0-)s->' 





We,Mort.e,Iasse. 



Gg 



^ 







0-3287 0-6683 



0-666O 



















load, - . 









0-4239 0-4239 



0-4239 













1 







cated, - - 











99-78 C. 





Duration of the experi- 









1 















106' 65' 







Movements on the scale 















before tlie experiment, 





-0-130 



-0-063 









Movements on the scale 



mo 













after the experiment, 

















Qo-Qx 



100-2 





276-8 ! 280-2 



277 3 



296 



Constants, - 







Wg=2-^ 



45; Wp=0-4692; 



Y^=U-Q 





In relation to the material employed in these experimeii' 

 and the results obtained therewith, the following is to be iv- 

 marked. The ruthenium was prepared from the perfectly 

 osraium-free so-called iron residues of the mint of St. Peters- 

 burg. For this purpose the gray powder was taken, whicfi 



