Fabrics, 201 



[ cannot give an estimate of cleaning the stream leading into the 

 lake nor of lowering the mud banks. The expenses of cleaning the 

 banks of the islands would be proportionate to that for the lake. 



I he expenses of the two experiments would be trifling. 



Other methods. 



A. — Another suggestion has to be considered, vis. : — 



Whether, by gradually reclaiming the lake by opening 

 the locks, the flies could be diminished. 



Certainly, if the lake disappears the flies will disappear 

 in that quarter, but the dhobies would have to be con- 

 sidered, and this alone renders the idea impracticable. 



B. — Another suggestion would be to introduce salt water, but 

 this appears to me to be— 



1. — Expensive. 



2. — Impracticable, because the dhobies' interest in the 

 lake has to be considered. 



5. Summary. 

 My belief is : — 



1. — Clean the lake, banks, swamps, etc. 



2. — Try the two experiments. 



If they are unsuccessful, there is not much lost and the banks 



must then be periodically cleaned and kept clean. 

 If they are successful — 



(d\ Tar the water-line of all walls, posts, etc., going into 



the lake, and let fresh tar be applied periodically. 

 (I)) Face the banks of the lake with slag mixed with tar 

 and let this be kept clean. 



XII.— INSECTS IN FABRICS. 



In Blankets, 



Setomorpha rutella, Zeller. Family Tineidse. Sub order Phalasna-, 

 Order Lepidoptera. 



