N. J. Mosquito Extermination Association 67 



You will find a description of this Paris green as a larvicide 

 and its use as a means of control of Anopheles larvse in the public 

 health reports, which you can get. 



Here in New Jersey, with more population than we have in the 

 South, of course you can get entire counties to- take up work, but 

 we have to work rather slowly and conservatively in the South, 

 but we feel that when a town does good work, extends it radius 

 of action because of the satisfaction with with work in the town, 

 and then the entire county gets sufficiently interested to have a 

 survey made, with a view to having county-wide work done, we 

 consider that successful for a sparsely-settled region. 



It has not been easy for field workers to obtain reports of the 

 progress that is being made in malaria control operations in other 

 countries, but fortunately abstracts are now being made and 

 included in Public Health Engineering Abstracts, U. S. Public 

 Health Service, Washington, D. C. 



One of the most successful of the recent malaria campaigns 

 was conducted at Jacksonville, Cherokee County, Texas. The 

 county medical association, the woman's club, the town author- 

 ities and business organizations gave their active support, and 

 at the end of the first year's campaign, it was decided to extend 

 control operations to a distance of nine miles beyond town limits. 

 The county authorities became interested and an Anopheles sur- 

 vey was made of the county. At the present time, it is planned 

 to extend the work over the entire county. Such work when 

 carried out will have an important bearing on the rapid develop- 

 ment of the coastal plain of Texas. 



President Meyers — Mr. Le Prince, in the information which 

 youi have given us with regard to the screen, it might be valu- 

 able if you have made any calculations as to the number of 

 apertures per square inch that would keep, out Anopheles. 



Mr. Le Prince — 16 mesh is satisfactory. I understand that 

 some of the manufacturers to-day are using a gauge of wire of 

 larger diameter which reduces the size of openings in their 14 

 mesh to the same size as the 16 mesh, so we have got to be a 

 little careful in specifying what size of wire, but the standard 

 16 mesh wire on the market is satisfactory for Anopheles. 



The point I wanted to make was that the public in general, 

 throughout the country, are under the impression that Anopheles 

 has not half as much sense as we have and those of us working 

 in the field know the Anopheles has a lot more sense than we 

 have. Openings left under doors, screens broken, and openings 

 in the floors give plenty of opportunity for Anopheles to enter 



