THE COMMUNITY CRUSADE IN CALIFORNIA 



Thus far there have been established five organized 

 malaria crusades in the state, two in Placer County 

 (Penryn and Roseville), one in Butte County (Oro- 

 ville), one in Tehama County (Los Molinos), and one 

 in Kern County (Bakersfield). These crusades, owing 

 to their distribution, have given a good opportunity 

 to study the characteristic local conditions in widely 

 separated parts of the state and under greatly differ- 

 ing topographical conditions. 



Leading up to the organization of a special crusade 

 against the malaria mosquito, a number of lectures 

 were delivered by the writer on the subject of "Insects 

 as Disease Carriers (Medical Entomology)." These 

 lectures were materially strengthened by an exhibit 

 illustrative of this subject on board the Demonstra- 

 tion Train. Apparently considerable interest was 

 manifested, but it was not until December, 1909, that 

 any visible results were secured. From a letter 

 written by Mr. Fred E. Morgan of Penryn, Placer 

 County, California, dated December 22, 1909, the 

 following is quoted: "We, here in the Placer foothill 

 region, want to fight the malaria mosquito, but do not 

 know just how to proceed. . . . Can we not expect 

 some aid in this . . . ?" This letter was answered 



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