N. J. Mosquito Extkr.mination Association 125 



son County has demonstrated that thirty-inch ditches one thou- 

 sand feet apart will drain a cedar swamp efficiently when the 

 water table is sufficiently lowered by pumping. A few years 

 previous Bergen County accomplished the same result in a cedar 

 swamp having a good fall to its outlet, but Hudson County has 

 made the conclusion final. 



Essex County has demonstrated that a ditch cleaning machine 

 is feasible although the present one is not yet a finished machine. 



Bergen County has successfully planned and built a bulkhead 

 one hundred and ten feet in length with three flumes. This 

 county has also shown us that a dike can be successfully built 

 without a core. 



There is no need to touch on publicity methods for you have all 

 heard of that feature of the work brought out admirably by Mrs. 

 Boynton, Mrs. Olsen and Mr. Howell and Mr. Gies. 



And lastly, I would like to mention the work of the Associated 

 Executives. Without the outlay of a single penny from the 

 organization they have given us two valuable contributions to 

 mosquito control work, the moving picture and the Mosquito 

 Manual. I do not have to describe them, you have seen both. 



This year the executives will endeavor to study the salt marsh 

 conditions with the following objects in view : 



1. To evaluate in terms of porosity and physical characteristics 

 of the soil the width, depth, length and frequency of ditching to 

 free a given area of open salt m^arsh from mosquito breeding. 



2. To evaluate the effect of mosquito drainage upon the im- 

 portant elements of the salt marsh vegetation. 



In the above we assume that the condition and nature of vege- 

 tation is primarily the result of the average height.of water table 

 and possibly seed distribution. We also assume that the condi- 

 tion and nature of vegetation indicates a difference in porosity, 

 physical character of soil and salinity of the soil solution. 



In conclusion, I feel that we may look with pride on what we 

 have accomplished in 1921 and can look for greater results in 

 1922. 



PrKSide:nt Me^yErs — After this convention has adjourned you 

 will have a new president and I want to say that my year of 

 being president has been a very delightful one. 



For seven years my connection with the work has been one of 

 increasing interest and one I watched closely and proudly and I 

 find that the interest increases continually, for much the same 

 reason that Shakespeare describes the popularity of Cleopatra in 

 the streets of Cairo. The infinite variety which neither custom 



