Cane Mills; and Megass as Fuel. 59 
Evaporation 114 lbs. feed water. 
48-03 combined water. 
25-26) 162-03 
6'4 lbs. water to 1 carbon 
Useful effect. 
25.26) 114 
4^ feed water to 1 carbon 
5040 heat units. 
Carbon. 
No. 2. Logie Megass Fibre 81.14 = 4°'5 
Water i8"86 
ioo' 40-5 
Evaporated 156 lbs feed water. 
18-86 combined moisture. 
40-5) 174-86 
4-3 pounds water to 1 carbon 
Useful effect. 
40-51 156 
3-85 feed water to 1 carbon = 4,612 
heat units. 
As it is the useful power given off by the carbon that we 
have to deal with, we have : 
Green megass.. ,4-50 
Logie megass... 3-85 
0-65 
or 17-0 per cent, in favour of the green megass. 
Taking the total duty done by the pound of car- 
bon as contained in the green megass we have 
6*4 x ii*20 = 7, 168 units of heat against the theo- 
retical 11,200 units, more correctly 12,906 Duplong 
or 14,040 Despretz. This points to a very fair duty 
H 2 
