506 ON THE JUICE OF THE SUGAR-CANE. 
hair of the sleepers may not be deranged. The musical instruments of 
the Fijians are trumpets of conch-shells, flutes made of bamboo, and 
drums of sonorous wood. Rude pottery made without a wheel and 
dried in the sun, is made by the women in some of the Islands. 
RESEARCHES ON THE JUICE OF THE SUGAR-CANE IN 
MAURITIUS, AND THE MODIFICATIONS IT UNDERGOES 
DURING MANUFACTURE. 
BY DR. ICERY. 
President of the Chamber of Agriculture. 
Translated by James Morris, Esq., Representative of the Chamber of Agriculture 
of Mauritius. 
(Continued from page 472. ) 
In order to appreciate the different quantities of interverted sugar 
produced both under the influence of the normal qualities of the juice 
employed, as well as in consequence of the greater or less degree of 
acidity in this liquid during manufacture, I have made various analyses 
which will be found in the two following tables, the sum of which 
shows so far as concerns the modification peculiar to the interverted 
sugar : — 
1. That two juices, one of which comes from unripe though perfectly 
developed canes, and the other from canes of full maturity, when manu- 
factured under identical conditions, give rise to a glucose transformation 
of crystallizable sugar faintly active for the second, but very energetic 
for the first, and in such a proportion that the second syrup, the produce 
of the unripe canes contains nearly equal parts of prismatic sugar and 
of levulose, that is to say, a quality of sugar which is worthless ; whilst 
the third syrup, obtained from ripe canes, contains only 27 per cent, of 
levulose and is consequently fit for a new boiling. 
2. That the acidity kept up in the juice for the purpose of obtaining 
certain qualities of sugar, is often carried beyond the conditions neces- 
sary to produce such qualities, and thus becomes the cause of a very 
appreciable loss, as the syrups can hardly ever be reboiled with any 
profit when the quantity of levulose exceeds 37 per cent, of the total 
weight of the saccharine matter which they contain. 
Restricted by the limits of this memoir,' I cannot further continue 
the study of the transformation of crystallizable sugar ; but what I 
have already said on this important topic, and the results indicated in 
the tables alluded to, will always be amply sufficient to enable 
those who are unacquainted with sugar manufacture, to estimate the 
considerable part which levulose or uncrystallizable sugar plays in the 
colonial manufacture of this staple, as the canes to be worked up always 
contain a greater or less quantity of this substance. 
