Megass as Fuel. ioi 
reducing the above figures to these proportions, we 
have — 
For ioo lbs. wet megass 168058 units. 
Sun dried megass -fJO of 379341 = 223052 ,, 
Logie megass _^. of 406594 = 178901 „ 
Comparing now these results with Scotch coal, and 
taking our data again from Box's "Treatise on Heat," 
we find— 
100 ft>s. Scotch coal gives 1300600 units. 
Less for air required — 
100 x 22-4 x (600 — 86) x -238 = 274022 „ 
Units available 1026578 
From these data it appears that it requires — 
61 1 lbs. wet megass. 
270*6 lbs. sun dried megass. 
254 lbs. logie megass. 
to give the same amount of available heat as 100 lbs. of 
Scotch coal, and that, taking the available heat from 
coal as 100, that from an equal weight of wet megass 
will be 16.3 
From the same weight of wet megass, as dried in 
the sun 21*7 
Ditto ditto logie dried... 17*4 
If we assume that 8| per cent, of sugar is obtained 
from the sugarcane, 12 tons of cane are required to make 
1 ton of sugar ; and assuming the extraction at 66 per 
cent., as before, we have 
Tiru of I2 tons in megass, or 4^08 tons of megass per ton of sugar, 
say 4 tons, 
