29 



A set of samples was obtained of Colonel Dulroca, manager of Mr. 

 Cartwright Eustis's Fusilier plantation, who practiced maceration dur- 

 ing the season, and analyzed with the following results : 



Analyses of maceration juices from Fusilier plantation. 



These analyses show a much greater dilution than any taken at Des 

 Lignes, as follows: 



Per cent. 



Calculated on the solids 19.48 



Calculated on the sucrose 18. 35 



At my request Colonel Dulroca made a test to ascertain the amount of 

 water he was using, and found it to be 4,350 pounds, or 522 gallons, per 

 hour. He did not know how much better extraction he was getting 

 with this water, but was quite certain it was considerable. 



QUALITY OF JUICES. 



The series of analyses given in the table on page 25 shows the aver- 

 age co-efficient of purity of the mixed juices with maceration to be .23 

 lower than the corresponding mixed juices without water. The juices 

 in the special experiment showed (page 28) a difference of 1 in the same 

 direction. Colonel Dulroca's juices, on the other hand, show a differ- 

 ence of 1.5 in the opposite direction. Of course I could not tell how these 

 latter juices were taken, as they were sent to me. A very singular 

 thing about the series of analyses, which I am able to account for only 

 by imperfect sampling, is that the analyses of the second mill juices 

 show a higher purity in those taken with water than without in every 

 case except one. In view of the fact that the mixed juices, even taking 

 the average of those corresponding to these samples of second mill 

 juice, show a lower co-efficient in the diluted juice, and as this could 

 only be brought about by a deterioration of the second mill juice I am 

 forced to the conclusion that the samples were not com parable. The 

 samples of mixed juices, being taken from a receptacle, are more relia- 

 ble than those of the single mills, which had to be taken from a spout 

 at intervals. In beet work it has been shown to be the case that juices 

 obtained by maceration are always less pure than by simple pressure. 



The use of "continuous presses "(in contradistinction to hydraulic 

 presses, which operate intermittingly) in beet work, with the addition 

 of water to the pulp, furnishes an interesting parallel to the use of 



