what has been done for the mere mechanical appliances, should be done
for the proper understanding of the chemical changes and conditions in
the constitution of the plant, and in the various processes of its
manufacture[1].

[1] Since the above chapter was written Mons. P.I. Michea, a French
chemist of some experience in Indigo matters, has patented
an invention (the result of much study, experiment, and
investigation), by the application of which an immense increase in
the produce of the plant has been obtained during the last season,
in several factories where it has been worked in Jessore, Purneah,
Kishnaghur, and other places. This increase, varying according to
circumstances, has in some instances reached the amazing extent
of 30 to 47 per cent., and so far from being attended with a
deterioration of quality the dye produced is said to be finer than
that obtained under the old crude process described in the above
chapter. This shows what a waste must have been going on, and what
may yet be done, by properly organised scientific investigation.
I firmly believe that with an intelligent application of the
principles of chemistry and agricultural science, not only to the
manufacture but to growth, cultivation, nature of the soil,
application of manures, and other such departments of the
business, quite a revolution will set in, and a new era in the
history of this great industry will be inaugurated. Less area for
crop will be required, working expenses will be reduced, a greater
out-turn, and a more certain crop secured, and all classes,
planter and ryot alike, will be benefited.

[Illustration: INDIAN FACTORY PEON.]