232 Dr. J. H. Gladstone on the Want of Uniformity in 



a diagram. This is reproduced, as far as the little crosses 

 are concerned, on a larger scale in the accompanying diagram. 

























: 



Z7Z/4 



52 





















\(557 

























< 



X 

























< 













































N*x 





























Gal 



T'S 



















C 



BSERV 



AT/OM 



r. 















# 



^N. 













1400 , 





VO 







* 























x\. 











1300 



^331^ 























/L 



















ieoo 





"V A 



A 





















>,^ A 

















1100 









A 











S 



<v 



















Cu 



60$\ 



1000 











































900 









&}f(£> 



?S 

















Ot 



SERVA* 



vo/vs. 



A 











800 















A\ 























X 







700 







































3&v 





600 



















2 





















c 



uS7S> 



500 











































1500 

 1400 

 1300 

 1200 

 100 

 000 

 900 



800 

 700 

 600 

 500 

 400 



10 20 30 4Q 50 60 70 6.0 90 100 



The crosses irepresent the absolute amount oMieat evolved in 

 dissolving one gramme of metal or alloy expressed in calories. 

 They show at first a pretty regular decrease in the calories 

 from the 1432 evolved by pure zinc towards the 604 evolved 

 by pure copper. But after the alloy containing 20 per cent. 



