ANALYSES—SMITH-—MADINIER. 175 
In this twelve per cent. of sugar, an examination by 
Soleil’s polariscope indicated the proportion of the crys- 
tallizable to the non-crystallizable sugar to be as 10 to 2. 
And hence he asserts the opinion that ‘this result settles 
the question that the great bulk of the sugar contained in 
the sorgho is crystallizable or cane sugar proper.” 
From the above it is evident that the cane juice ex- 
amined by Prof. Smith contained about 14 per cent. of 
sugars (13°7), the proportions of cane and uncrystallizable 
sugars being respectively 11:4 and 2°3 per cent. The juice 
did not equal in saccharine richness that analyzed by Dr. 
Jackson, but this difference of quality is not greater than 
is often met with in canes grown on different varieties of 
soil, or under other dissimilar conditions; but the statement 
that the uncrystallizable sugar exists in it in very small 
quantity relatively, is in accordance with the foregoing 
results. . 
These analyses were made at about the same period, the 
one upon canes grown on the Atlantic slope, the other 
upon cane of the same variety grown in the Mississippi 
Valley; and they have a permanent value as indicating 
the saccharine qualities of this cane at the time of its in- 
troduction into this country. 
M. Madinier, of Paris, in a letter, an extract of which is 
published in the Agricultural Report for 1856, p. 313, 
states that the juice of Chinese cane grown in the north 
of France, in lat. 49°, yielded 16 per cent. of sugars as 
determined by Clerget’s optical instrument. This must be 
regarded as a very favorable result, inasmuch as the climate 
in which the cane was grown is scarcely better suited to 
this plant than that of England—being sufficiently moist, 
but lacking the fervid glow of sunlight which prevails 
during the summer months in this country in the same 
latitude ; and it is remarkable that there the percentage 
