THE PENRYN CRUSADE 93 



inspection, which brought to light man}' pails and tubs, 

 especially in Chinatown, breeding mosquitoes, chiefly 

 Culex. A short explanation to the white residents 

 will usually stop this condition, but the Orientals are 

 continual offenders in this respect. 



One of the most illuminating instances of the effective- 

 ness of the control method used occurred during Mr. 

 Cornell's work, and the following description of the 

 circumstances is taken direct from his notes : "Aug. 5. 

 Investigated the reported case of malaria at Mr. 

 Magnison's place. Found that he had been sick with 

 chills and fever for a week or more, also that there 

 were many mosquitoes around in the evening. On 

 inspecting the premises I found a place in the orchard 

 where a leaky pipe left pools of water standing con- 

 tinually. They contained many Culex and Anopheles 

 wrigglers and tumblers. Since the place is but one 

 hundred yards from the house, I concluded that it was 

 the source of the trouble. On further investigation 

 I found no other bad places. Mr. Magnison was 

 in the habit of working around this place in the even- 

 ings, and so got inoculated. In the afternoon I sprayed 

 and shall have the pipe fixed." On September 16th 

 Mr. Magnison reported that he had had no malaria since. 



Mr. Cornell resigned on August nth, and was suc- 

 ceeded on the same day by Mr. W. H. Davidson. Mr. 

 Davidson continued the work of inspection and oiling, 

 keeping the situation in hand until September 9th, 

 when he resigned. It was unfortunate that he should 



