ii2 MALARIA 



ties, not carrying on such a crusade, will be pestered with an 

 abundance of mosquitoes. With the disappearance of the mos- 

 quitoes, malaria is also said to be on the wane, according to the 

 statements of several close observers. 



"All situations in which Anopheles breed have now been dis- 

 covered and are under control. The situation most feared, 

 namely, the pools left by the receding water of Feather River, has 

 been found to be of comparatively easy control. The work now 

 being done along the levee demonstrates beyond a question that 

 malaria need not exist next the river in any town similarly situ- 

 ated. Countless thousands of malaria-transmitting mosquitoes 

 were found to be breeding in these pools, kept under constant 

 surveillance in expectance of what has actually happened. Mr. 

 Bairos (Field Agent) has already succeeded in draining several of 

 these left-over ponds, diverting the water into the river, and the 

 use of only ten gallons of oil along the levee during the last two 

 or three days has reduced the number of wrigglers to a minimum 

 and the rest will be taken care of during the next day or two. 

 Thus what was looked upon as the greatest menace has been 

 reduced to a controllable situation. 



"In all cases where malaria has existed at any time, there 

 have also been found the breeding places for Anopheles in the im- 

 mediate vicinity. The correlation between the two conditions 

 has now been established absolutely, the last spots having been 

 determined during the past day or two, as already mentioned." 



"Though only a partial survey was made of Oroville on Mon- 

 day by Professor Herms, yet the observation was complete enough 

 to make it possible to state that the work of killing the malaria- 

 breeding mosquito in Oroville will not be as difficult a task as 

 was at first supposed. In the first place, it was learned imme- 

 diately that the dredger ponds, with their load of muddy water, 

 offer no menace, as the Anopheles mosquito does not breed there. 

 In the second place, the stagnant reservoirs of water, while emi- 

 nently unhealthy, do not in their turn breed the Anopheles. 

 Nor does the river, with its burden of running water. Where the 

 Anopheles was found in Oroville, was rather in pools of clear 



