170“ * TAssntary 
SUGAR IN MILK. 
By snares By difference. 
2 Ld tvs 5 ON Pe a Ah ee ces 
\ 3, NC Ca ae A 
™ re. A a 
Yo 
t 
er cent. Per cent. : 
tree Cp riven aeRO hina’ ote ib ave kets. Ritekehe sar MaIeUY fe fo 5.01 5.02 
PAS SURPRISE Ry oe SP ANN 4.71 4.67 
DAN eit pipes Oaee key hes S devare Nee Wloka bane uaeueME ets ive 5.02 5.04 
ASS ME Tew ait bie thigh bce Tietd Gig A SMC eete breLnts 5.15 4.86 
EVRUEIE ERUE Doki chp cerS ROG piers ate lWnn ol ee tatnue eRe Te Wee eee 5.15 4.82 
SRR CONTE ea ate She: sete Ghote eibbafelte wi athen inte te ck iste 5.19 a yyl Rs vie 
Ee ake a he's che lbs. & ovoceTelt: Slila staid SRC Tohs 6. te 5.21 5 339 
oN Aa SR aA Ue Re RCAC ER SRN ALS Ig Ape SY id 5.16 5.05 
4 OEE RS OO Re em A RORE CRIES CA Ae fc pld ‘a ther 5.13 5.47 
UE ES RRR a a Aa ea AS uN Th gla ge Ck 5.21 5.12 
ELON Pocasl ie ios s Sos, ooon le otis PNR ua a tecolle ote leu terehatie Canoe ee 5.14 §.21 
A cin Ki avately a tal alin SW bie ko ete chet aaa ae Ripka ature ne ae 4.56 4.59 
d £3 J SRNR atin MMA se beat LT I thse Se AAA A MS es i 4.44 4.23 
AYOLALO . al» viele s wevoinas dese a 4s Tee ha alee es 5.01 4.97 
t. Ash. 
The ash is obtained by burning the dried residue, obtained in an 
evaporator with asbestos as directed in section 3, at low redness. It is, 
however, unnecessary, provided sufficient asbestos is taken to dry the 
milk before applying the lamp. The milk will dry upon the asbestos 
-and burn without spurting. 
IlJ, THe EsTIMATION OF SUGAR. 
1. Cane Sugar. 
The investigations of Dr. Peter Collier have shown that the amount 
of cane sugar found in cane juice, by means of the polariscope and by 
the chemical method, agree quite closely with each other, the 
amount obtained by the former method being a trifle lower than 
that by the latter. The polarjzation method in view of the fact that 
the error, if it is an error, is on the safe side has, therefore, been 
adopted for the estimation of cane sugar in the juice of cane. 
The juice, expressed from two or three stalks of cane by a hand mill, 
is tested with a hydrometer for specific gravity, the weight of the 
stripped cane and also of the juice obtained being taken, to ascertain 
the relative amount of juice. | 
To 100 c. c. of the juice are added 10 c.'c. ofa solution of subacetate’ 
of lead, the liquids being thoroughly mixed together and filtered. The | 
filtrate is tested with the polariscope in the usual way. 
2. Glucose and Invert Sugar. . 
Glucose and invert-sugar have been determined volumetrically b 
Mohr’s method, certain modifications, mentioned below being intro- 
duced. 
The solutions required are: 
1. Fehling solution prepared according to the formula of Soxhlet,viz. : 
(a.) 69.278 grams of crystalized cupric sulphate are dissolved in 
water to one litre, and 
or! 
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