The anti-malarial work here reported upon was initiated in 1926 under the auspices of Messrs. Duncan Brothers of Calcutta, the agents for three of the tea gardens in the group of which I was in medical charge. Later on, other companies decided to adopt the same measures, so that in the end the estates of the Amo, Deundi, Chandpore, Teliapara, Luskerpore, and the Imperial Tea Companies were incl...