is - suantaRy OF CHEMICAL WORK ar RIO ‘GRANDE: UND BR DI 
oe “TION. OF THE CHEMIST OF THE DEPARTMENT. 
‘See / {Abstract of report of Hubert Edson.] Be is.” 
‘The manufacturing season at Rio Grande commenced September 5 and ‘glade 
0-4) November 8> The analyses of juices were begun September 8 and continue 
| - throughout the season. : 
On October 15 there fell a heavy frost, one of the earliest known in Rio Grande 
which completely killed all the leaves on the cane and stopped the growth of ics 
the unripe fields. The Late Ovange was the only variety which was not seriously in- 
jured by the frost and the cold weather following it. This hardy cane, although 
the frost touched it before it was matured, held its sucrose to the end of the beasts 
even notwithstanding two slight freezes. 
Tt will be noticed from Table IIL that the extraction of sugar by the battery was, : 
very poor. This arose froin improper management of the batiery by the men em- ar 
* era ployed in the diffusion room, siuc.. sugar being thrown out with the Prva does x 
_. chips from this cause. 
i Ay ite = ’ : ae. ‘ 4, 
is AEG [ “ EXPERIMENTS IN CRYSTALLIZING SUGARS. i} 
ys Ae ia & , 
aaa All the sugars as first run from the centrifugal were full of * sthear,”” and after : 
t Ps the re war season had closed experiments were made as to the advisability of re- . 
__ erystallizing the sugar, but it was found that the loss in weight was too great to _ 
/ make it profitable, only 8,829 pounds of recrystallized sugars being obtained from — 
¢ nearly double that az nount of smear sugar. 
In Table VIII are found the analyses “of the recrystallized sugars. ie! 
_ On November 19 and 22 experiments were made with the diffusion battery to see | 
._ if it was possible to obtain a Potter extraction than the season’s work had given, = 
An extra cell was made and placed outside the battery. Then, instead of empty- 5 
ing one cell of diffusion juice at a time, the two heaviest juices were drawn into the 
outside cell, By drawing oif two cells at a time two baskets of fresh chips could be © 
immersed each time in the outside cell, and the diffusion juice be brought up within 
Pat 1° Brix of the mill juice, and at the same time an excellent extraction obtained. 
> .° Both the days in a iich these experiments were made were very cold. This, of _ 
| gourse, made it difficult to keep the battery ata sufficiently high temperatiute for a 
_ °° proper diffusion. 
Rs Ta the appended table the degree Brix is all that is given, as the juices’ were ‘not 
Bie used: 
A Se 
) 
i 
Wee 
. 
be Ses 
F 
7 
be 
w= 
Pa 
¥ 
er oe = — Se a neal of ‘ 
ep hee 
aes Diffusion Exhausted 
ie Chip Juiee.| “juice. | chip juicé, 
ents Ramee "yf. 
Average degree Brix: P 
IAG AiLei104 61) Se MS oe Reni eee ar Sorc Ree EO aa et ase Ie ee | 14.65 
: 15.50 “ats Gee 
y NGVEMINEE Ce CADE on15 2 ccs So sek e oats Nebeie isthacee cuit ae } 13. 42 12. 66 Aric Aahetn PN 
=| } NoroMBeL Oe PAM yates 5s. Lees. tems sla aad tio a hie yatnten pete sae | 15.18 13.79 i - 
u wt These ex <periments were conducted by Mr. Hughes and Dr. Neale, chemists of the. 
a New Jersey experimental station. The degrees Brix were taken by Dr. Neale and 
yc) mayeell. 
A sample of chip juice was polarized and found to contain 8.98 per cent. sucrose, i 
with a purity of 59.27. Nhs, 
RESULTS OF ANALYSES. 
TABLE 1.—Analyses of juice from fresh chips. 
Mates. SN UTM eI OL ANALYSES A.) fae Wee 3 Bao Rui inde ca ee ie oleae pare ea 
GAS UC TOS Moki Heist c tees Serre Se Signs Cd lee ee ane TEEN ives Aas tee ale ie tas 
ay ys WEEE MICTIHCOSE Sree auc cosets ate icye all some laiig oie anc sees Sr Sop CONS Ue eee ey oe 
ANS Mean total’ solids (by-spindle): ssa shins aa e LW a ibe eRe even, eee 
Sucrose : 
DUA UAT recrottect lire oe tara: elcome we aig 2k eS Aiea Ee aac Sh Sane 
