THE PRELIMINARY SURVEY 137 



Appendix IV 



Extracts from Field Notes 



September 27. On South Center Street, outside of 

 town limits, in orchard of Douglas, overirrigation, 

 leakage, and overflow from ditches causes swampy 

 area near house. Larvae of Anopheles maculipennis of 

 Culex {Theobaldia incidens), and pupae found in water, 

 and adults in foliage. Cases of malaria in adjoining 

 house. 



Adult mosquitoes found in dense brush and foliage 

 on mill race near Runyon place, small pools along 

 edges. Should be brushed out and burned, and edges 

 of mill race oiled. At concrete culvert of Runyon 

 ditch crossing railroad tracks, small ditch running to 

 right on west side tracks, sluggish current, Anopheles 

 larvae. Oil. East side track here, seepage pools. 

 Anopheles and Culex larvae numerous. Oil. Seepage 

 water at other places along this ditch ; ditch foul with 

 weeds. Further down on mill race many pools and 

 other water, breeding both types of mosquitoes, but 

 too far away from town to need attention at present. 



September 28. Mitchell place on end South 

 Josephine Street, large area of wet ground, caused 

 by water wasted for stock. Mosquito larvae very 

 abundant. Shut off water and oil. 



