LOVERING’S EXPERIMENTS. 17 
The foregoing are all actual results produced by myself, (the polar- 
iscopic observations having been taken on the spot, under the supervi- 
sion of my partner, Mr. William Morris Davis) with no cbject in 
view but the truth, and a desire to contribute whatever useful inform- 
ation I could towards the solution of this interesting and impcrtant 
question. They are, I think, sufficiently flattering in themselves to 
warrant renewed exertions on the part of our agriculturists of the 
Northern and Middle States especially, and perhaps those of the 
South also, in the pursuit of this promising branch of industry, to 
the full and profitable development of which it is certainly capable, 
and which it is destined ultimately to attain—(as before mentioned 
they have been accomplished without the advantages of the powerful 
sugar mill, the vacuum pan, and the many other improved imple- 
ments and apparatus now in general use in Louisiana and eise- 
where) and they are also very important and interesting in many 
respects, not apparent to those unacquainted with the subject ; it may 
therefore not be superfluous to mak@ some further explanatory re- 
marks : 
Ist. The mill used and the power employed in these experiments 
were much less efficient than those in general use on sugar planta- 
tions, and the waste proportionally greater; the loss from which 
causes I estimate at not less than ten per cent. 
2d. It is well known to all who are acquainted with sugar and sac- 
charine solutions, that, by frequent heatings and coolings, a considera- 
ble portion of the crystallizable is converted into uncrystallizable 
sugar, and is consequently lost as sugar. In these experiments every 
parcel was from necessity heated and re-heated from eight to twelve 
different times. 
3d. It is impossible to produce as good results, whether as regards 
quantity or quality, from small as from large quantities. 
Ath. This sugar, (Sample No. 4,) is quite dry, and will lose compara- 
tively nothing by drainage; the yield wouid be considerably greater, 
if it contained the usual quantity of footing that is contained in the 
hogshead when sold at the plantation, one of which being weighed 
there and re-weighed in Philadelphia, in the month of July, will be 
