126 SUGAR MILLS. 
incurred at the North in the sorghum manufacture. Sor- 
ghum and the Southern cane are composed of about the 
same relative proportions of juice and woody fiber; and 
although the obstacles to the complete removal of the juice 
are greater in the case of the latter, on account of the joints 
being more numerous, and the stem generally of closer and 
more unyielding texture, yet they are the same in kind, 
and we may adopt here without hesitancy suggestions, 
which in this instance, experience with cane mills at the 
South has dictated, and proved to be valuable. 
The importance of improving to the highest possible 
degree the machinery for extracting the juice, forced itself 
upon the attention of the planters as soon as the composi- 
- tion of the cane became accurately known. Within the last 
half century nothing has been omitted in the construction 
of mills of the common form with three rolls, that would 
in any degree add to their power and efficiency. The re- 
sults arrived at by careful trial in a great number of in- 
stances, with these mills in different countries, have been 
pretty uniform. Some of the most valuable and trust- 
worthy statements, selected from different sources, are given 
below. 2 
In the Island of Guadaloupe the results of 44 trials per- 
formed with 17 water mills, 15 wind mills, 7 mills with hor- 
izontal cylinders, and 5 steam mills, was 
61-8 per cent. of juice by hydraulic mills. 
Bina J ni those with horizontal rolls. 
G09 + 3 2 steam mills. 
59°3 sé a3 x water and wind mills. 
Bo), * “3 ie mills with vertical cylinders. 
58-2 «6 “ - mills of animal power. 
56-4 «* As = wind mills which are still employed 
to some extent in Guadaloupe. 
59°3 per cent. may be assumed as the yield furnished by 
