Fio. 53. Flytraps for barnyard or stable window 



1, first model as found after being set one week ; 2, same, emptied hy lifting off 

 top frame ; trap lifted from bottom board to indicate construction ; 3 and 4, larger 

 window trap, sliowiug construction and in position. The small traps in 3 are 

 merely to take off samples of the catch for analysis. These traps are made to fit 

 the window about which flies naturally congregate, gunny sacks are hung over 

 the other windows to darken them and to flap in the wind, and, when properly 

 placed and managed, one trap will catch practically all the house, stable, horn, 

 black, bot, and blow flies and even the mosquitoes that try to get in (U- out. or 



that either feed or breed about the stable 

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