68 TlMEHRI. 
could be repeated with the more perfe6l appliances and 
methods now used at the Government Laboratory, a 
higher percentage of sugar would be shown, together 
with a closer correspondence of the quotient with those 
given by more recent analyses. 
I have also calculated the fa6lor corresponding to the 
degree Bm. of average juice of canes grown in this 
colony. The usual table relating to Bm.'s hydrometer 
refers only to pure sugar solutions, and nothing in the 
way of correcting the indications of the instrument for 
the impurities in saccharine juices appears to have been 
attempted, if we except a short, and to me, incompre- 
hensible table compiled by Dr. ICERY, which is some- 
times met with in books. The non-saccharine con- 
stituents of cane juice, at all events in the West Indies, 
do not greatly vary in quantity, consequently the cor- 
re6led indications of Bm. give results differing but 
slightly from those furnished by analysis. The table 
which will be found on page 70 showing this is founded 
upon the analysis of 40 samples of juice from canes of 
various kinds. 
