56 N. J. Agricultural Experiment Station, Bulletin 348 



marsh mud is stocked. In about one month in spring and only 8 

 days in midsummer these wrigglers, if the covering of water remains, 



Fig. 27. Breeding salt marsh. 



transform to myriads of adult mosquitoes, and a few days later dis- 

 tribute themselves on the wind, in some cases reaching points as much 



