Fig 1. —Photograph showing the "outfit" used for treatment. Note the small dippers of 3, 2, and 1 c.c. capacity for measuring doses of carbon tetrachloride and the aluminium cups. By forming up the Natives in rows, according to size rather than to age, and using the dippers and a supply of cups, it is possible to treat large numbers in a very short time.

Fig. 2. —Native "drop" latrine which is being installed where possible in villages on the coast.

Face p. 1.