Report of Society's Meetings. 211 
I will now lay before you in a clear and concise manner the experi- 
ments conducted by me with the Model Mill. 
First Experiment. — This was conducted by grinding four lbs. weight 
of canes, split up in such sizes as you now see before you. These 
pieces of cane had been exposed for 36 (thirty-six) hours to the aftion 
of the air, and had no doubt parted with some of their moisture, as the 
large amount of woody fibre, amounting to 1875, they contained testifies. 
Grinding this parcel, containing four pounds, I obtained as a residue 
one pound of megass, which is equal to 75 per cent, of the original 
weight of cane passed through the mill. 
To find the amount of moisture contained in the sample of megass, 
to arrive at the amount of fibre contained in the cane, I exposed the same 
to the sun's rays for four hours and the decrease in weight amounted 
to the following : — 
Loss in weight 1st hour 2 ounces. 
>i >) <> 2 ,, 1 ,, 
i) )> i> 3 )i 2 11 
11 II 11 4 )i "5 11 
in all four ounces. At this point evaporation ceased, and the megass 
was as crisp as a biscuit and had parted with all its moisture. The mill 
having extracted, as already stated, 75 per cent, of the weight of cane, 
and having lost four ounces by evaporation, equal to 6 25 per cent., these 
two sums added together amounting to 81.25 represent the amount of 
available juice contained in the cane, and if we add 1875 the amount 
of fibre contained in the canes to 8i - 25, the available amount of juice in 
the cane we have a total of 100 representing the original weight of 
cane. 
Having ascertained that the mill extracted 75 per cent, of the weight 
of cane, and having found 81 "25 as the available amount of juice con- 
tained in the cane, we come to the following conclusions, that 75 per 
cent, of 8i'25, the amount of juice contained in the cane originally gives 
an extraction equal to o,2"30, that is to say, the mill extracted 92^30 of 
the available amount of juice contained in the cane. In this experiment 
I omitted weighing the juice. 
Second Experiment. — Having procured a better sample of cane, I 
ground ten pounds with the following result : — After passing through 
the mill 10 lbs. of cane, I obtained two (2) pounds of green megass ; 
this is equal to 80 per cent, of the weight of cane passed through the 
mill, and to find the amount of fibre I dried the megass for five days, 
DD 2 
