406 Transactions.— Chemistry. 
a fair demand, while a large production would certainly warrant the erection 
of a factory in some central place for the manufacture of citric acid, an 
article always so largely and steadily in demand in all parts of the world as 
to remove any danger of sharp competition reducing its value. ~ 
Tf, in addition to the Citrus limetta and C. limonum the C. bergamia was 
also planted, the essential oil, which could be extracted by machinery at 
a very small cost, would also add to our list of exports, while the juice 
would be of value in the manufacture of citric acid. The position of Auck- 
land in respect to the Island trade, and to the extent of land to the north 
so well adapted to the growth of this species, points to a successful industry 
in the manufacture of citric acid in this city at no very distant date. 
