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REPORT OF THE CHEMIST. — ; 265 
90 per cent. of juice, we have in 1,757 pounds of chips 1,581.3 pounds 
of normal juice. 
The quantity of diffusion juice from this was 2,170 pounds. The 
increase over normal juice is therefore 589 pounds, or 37.2 per cent. 
In the last run a much greater dilution was secured. In order to - 
et a slow current of the juice through the calorisators the master of 
iffusion was instructed to begin filling the cell with juice when it 
was about half full of chips. At the end of the run it was found 
that the introduction of liquid had caused a floating of the chips, 
and that the weight of chips in each cell .had been greatly dimin- 
ished. Thusa higher dilution of the diffusion juice was secured than 
was intended. The very perfect exhaustion of the chips during the 
last run was partially secured by this means. 
The mean weight of chips in each cell during the last run was 1,500 
pounds; the weight of normal juice 1,350 pounds, giving an increase 
of 60 per cent. 'Thisdilution is greater than is necessary for diffusion 
work. With a battery of sixteen cells I think the dilution could be. 
easily reduced to 30 per cent. and the extraction be satisfactory. 
COAL CONSUMED. 
The quantity of coal consumed depends, first, on the efficiency of 
the boilers and evaporators employed; second, on the quality of the © 
coal, and, third, on the dilution of the juice. 
_ In beet-sugar factories the method of computation is generally based 
on the dilution arising from drawing 180 pounds of diffusion juice 
from each 100 pounds of beet cuttings. In respect of evaporation | 
what is found to be true of beet juices will also apply to cane juices 
of the same density. 
From the arrangement of the machinery at Magnolia it was found 
impossible to measure the quantity of coal consumed by the diffusion 
work. In the last run, when the milling work was over, the centrifu- 
gals were run drying seconds and the vacuum pan boiling thirds dur- 
ing the process of the work. 
Tn addition to this, a part of the steam used was furnished by the 
bagasse boilers, using wood and coal as a fuel—not an economical 
method of making steam. 
_ As nearly as could be estimated, the quantity of coal required to 
make a pound of sugar was 2 pounds. The actual quantity of coal 
which would be required with the best boilers and evaporators may 
be found by consulting Dr. Karl Stantmer’s latest edition of ‘‘ Text- 
book of Sugar Making,” pages 873 et seq. 
When 180 pounds juice are taken for each 100 pounds bects the con- 
sumption of coal to reduce the juice to a sirup of 60 per cent. total 
solids is as follows: ) 
Pounds. 
PURPA PERE EaPICU BAIN GAAS rd, ooh Vets dic Ga ctele os Ed aya ees ele TNS ole oh «ieee wae 13.50 
rmmnemin ee rarseip Lig cle LOA! oe AEG nh othr chin des se saiehe Meise tee nena 9.10 
Np eretne MONEE POOL PAINS 3545/22 led otiase oe a aps 0 we as vinield ese le Ol eee es 6.76 
To reduce the sirup to masse cwite requires 4.44 pounds. 
We find, therefore, the following quantities of coal necessary for 
each 100 pounds raw material giving 180 pounds of juice: 
Pounds. 
PANNE EARL CD Tg UNAS MLNGLIS ohio et day Kv a; coe hoc vols cas eie tel vin Paintin ilies fais Svei Seeare or aieds uals. Be Sielaue ashe 17.94 
ENG vs sh, GOL TUS, 122 DIE aN Re ai: 2a eR SP ee OS ELE 13.54 
BONY ope eS SEPM EEOCE cto cig La Gate batbaiee see auate oie ood 2 gga oR hade ofo.0 ain oe ase 11.20 
H, now, we take the ordinary dilution for sugar-cane, the following 
numbers are found: 
