more slowly. It was clearly evident that the pressure afforded by the 

 feed-tank of the battery, viz, two-thirds of an atmosphere, is not great 

 enough to work a battery rapidly when twelve cells are under pressure. 



ANALYSES OF THE CANES WORKED. 



Samples of chips were taken from each cell until twelve were tilled. 

 These samples were then passed through a small mill and the juice ob 

 tained subjected to analysis. 



The juices thus obtained had the following composition : 



First sample . . 

 Second sample 

 Third sample 

 Fourth sample 

 Fifth sample 



WEIGHT OF DIFFUSION JUICE. 



From each cell were drawn off 1,000 liters of juice, or 1,040 kilograms. 



The number of cells tilled with chips was 60 ; the weight of each cell 

 of chips was 2,125 pounds; weight of juice drawn off from each cell was 

 2,280 pounds, or 163 pounds more than the weight of caae used. 



ANALYSES OF DIFFUSION JUICE. 



The samples were taken from each charge of juice drawn, 

 twelve were taken the mixture was analyzed : 



When 



EXHAUSTED CHIPS. 



Four samples of exhausted chips were taken. The first one was from 

 the first five cells only. No samples were taken from the next nine cells, 

 and after that the samples were taken regularly as before. Following 

 are the analvses : 



