Diffusion versus Double Crushing. 235 



and we shall obtain the amount of ist sugar which we can 

 expe6t from one acre if we work up the canes by diffu- 

 sion. Should a lucky planter answer to this, excuse me, 

 I get 2*57 by double crushing, I can only tell him you 

 must either reap 32*3 tons cane per acre, or your cane 

 has I5'2 per cent sugar, and in either case you would 

 have by diffusion a return of 3.1 1 tons ist sugar per acre. 

 Gentleman, whoever does not move onwards goes back- 

 wards ! There is no such thing as keeping on the same 

 level. Diffusion is a step forward — a progress — therefore, 

 it is well worth while to get somewhat closer acquainted 

 with it, and to examine under what conditions it 

 can and must be applied to advantage. One thing 

 which I consider very essential if diffusion it to be intro- 

 duced successfully and lastingly to the sugar buildings of 

 this colony, is a radical change in the training of building 

 officials, as there is no doubt that the diffusion process 

 makes considerably wider claims upon the exa6litude 

 of the working people as well as more especially 

 upon the officials. These latter or more exactly the 

 building overseers, must be able to train their working 

 people to most scrupulous cleanliness, to punftual and 

 conscientious work, and keep them to it. This can be 

 done only if the building overseer himself is absolutely 

 familiar with the whole of the building work, if he un- 

 derstands and recognizes the importance of every part 

 of the process of sugar manufa6lure, as it is carried on 

 in the buildings under his charge, and if he knows the 

 close relations to each other of all stages of the manu- 

 fa6lure, from the recovery of the juice up to the centri- 

 fugals, as well as the relationship between the steam 

 produ6lion and steam consumption. Only a gentleman 



