The Mosquitoes of New Jersey 



77 



D 



Fig. 43. Relative level of water on the protected area as compared with 

 the tide. A. Sluice and gate in Maple Island Creek. B. Same just before 

 the sluice begins to discharge. C. Same showing medium tide level, see the 

 level of Mr. Walden's boot soles. D. Same showing extreme high-tide level, 

 see level of Mr. Walden's boot soles. E. Same showing relative level of water 

 inside and outside the dikes under extreme high-tide conditions, (i) shows 

 Mr. Walden standing at water level inside the dike and (2) shows the same 

 man standing at the level reached by the water outside the dike under extreme 

 high tide. 



