68 PRELIMINARIES 



be made of iron, as it is more durable than wood, 

 should be capable of holding sufficient oil for the 

 consumption of each brigade per day. It should 

 have a hole at the top and a brass tap at one end. 

 Each workman should be given a bucket and a tin 

 one-litre measure ; and he should be supplied with a 

 bundle of cotton-waste and a broomstick. The fore- 

 man's equipment consists of a notebook and pencil. 

 He can be given a distinctive uniform if it is thought 

 desirable. 



With these preliminaries accomplished all is 

 ready for a start, which need not be delayed. If 

 there is a large ignorant population in the town, the 

 first brigade should be instructed to begin operations 

 in the residential district occupied by Europeans. If 

 it is successful there, the natives will soon begin to 

 ask for an extension to their quarter also. But there 

 should be no delay after the preliminaries are settled 

 and the work has been well advertised. 



When actually starting the campaign the foremen 

 and workmen should be shown mosquito larvae and 

 pupae in a glass of water, and the experiment of drop- 

 ping oil on to its surface repeated before them. 

 Then empty some of the water on to the ground and 

 let them watch the mosquito larvae die as the water 

 dries. This is to teach them the nature of their 

 work. 



