144 TlMEHRI. 
An analysis of mature Otaheite cane frequently 
attributed to Payen and copied from his Precis de 
Chemie Industrielle seems to be really Casaseca's 
given above.* Whilst Boussingault in his Rural 
Economy gives the following table as the result of Peli- 
got's and Dupuy's experiments in 1 841-1842, on dried 
cane and preserved juice from Guadeloupe : — 
Composition of Guadeloupe Canes. 
Description. Water. Sugar. Woody Fibre. 
Plant Canes 73*9 172 89 
First ratoons 717 178 10-5 
Second „ 71-6 164 12.0 
Third 73*0 168 102 
Knots 708 120 17*2 
Eight months' Cane 73*9 i8"2 7*9 
Ten months' Cane 72*3 18*5 9*2 
Lower part of Cane 73*8 155 108 
Middle „ , 72-6 165 10*9 
Upper „ , 72-8 15-5 117 
In Peligot's original report to the French Govern- 
ment, the results in the third column were given as 
" soluble matter" in the cane and not as sugar; but 
Peligot believed that the soluble matter was nearly 
all crystallizable sugar, and that other substances were 
present only in such small quantity that they might be 
disregarded. 
I took the trouble to hunt up the methods by which 
these analyses were made, and found that like certain 
others that I shall refer to shortly, they were not the result 
* This analysis seems to be a favourite one with compilers, and is 
copied into most books treating of sugar. In an extended form it is to 
be found on page 817 vol. 3 of Ure's Dictionary ; and it is the only one 
given in the recent book by Lock, Wigner and Harland, who have, in 
their turn, apparently taken it from Dr. Phipson's well-known pamphlet. 
