PM.Mag. S.5. Vol. 29. PI. VII 



Fig. 3 



Scale i) 

 7,7,1. Tkemwntjeixns . 

 1,1 Tkermoineter tappers, 

 (' Calorimeter. 



S, S. Stirrers, 

 J, Double copper water jacket, 

 /'. Electromotor . 



Mintern Bros . lith. 



