974 
becomes less and less pronounced at higher temperature, which can 
be accounted for by the increasing dissociation of the hydrates on 
increase of temperature. 
300 
iS) 
bh 
ee) 
DOORSTR TIJD iN SEC 
S 
S 
an 
So 
qn 
ee ae ll 
So 
TEMPwGR C. 
a 
5 
C 80 
GEWA S03 
Fig. 3. 
Laboratory of General and Inorganic 
Chemistry of the Unwersity. 
Amsterdam, December 1920. 
