72 TlMEHRI. 
equal to 37*4 0/0 of its weight. This quality of megass 
can easily be obtained by good mills, especially if they 
have the hydraulic attachment. If it is desired to add 
water or steam to the megass in order to diffuse the 
sugar it contains, this can be done between the first and 
second mills or between the second and a third mill. 
By the time the megass leaves the second mill, the fibres 
will be pretty well lacerated and the function of the third 
mill will be chiefly one of crushing or squeezing. 
Probably this third mill may be advantageously replaced 
by turbines or presses. Supposing there is no third mill, 
and that the water is added to the megass after it leaves the 
first mill, we find that it will require 391 lbs. of water to 
reduce the 2,735 lbs. of juice contained in the megass to 
a density of 8° Beaume. If this megass contains 37*4 0/0 
moisture after crushing, it will be constituted as follows : 
fibre 1,265, sugar 145, water 841. This megass contains 
29 lbs. sugar less than the megass which was simply 
crushed twice without the addition of water or steam. 
Supposing that 72 0/0 of the polariscope indications are 
obtained in first quality sugar, and neglecting the value 
of the offal products of the sugar obtained by diffusion, 
which will be very small, also the cost of evaporating 
machinery, we have 72 0/0 of 29 = 21 lbs. sugar x 3 
cents = 63 cents. But by dissolving the sugar out of 
the megass the latter loses a certain amount of heating 
effect, which we have assumed to be equal to an addi- 
tional evaporation of 2-5 lbs. of water for every pound 
of sugar diffused. 29 x 2*5 = 72-5 pounds water less 
evaporated by megass, plus 391 lbs. water added to 
megass equals 463 lbs. water to be evaporated. 
463 -v- 6 = 77 lbs. coal x 0-35 cents = 27 cents ; 63 
