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Farmers' Bulletin 73^ 



hinged. On account of the danger of the door being left open 

 through carelessness it is advisable to arrange a lift door which can 

 be opened by jilacing the foot on a treadle as the manure is shov- 

 eled in. The door should be heavy enough to close automatically 

 when tlie treadle is released. A manure bin with flytrap attached 

 is shoA^Ti in Figure 6. 



Attention is directed to a maggot trap devised by R. H. Hutchison, 

 as described in Farmers' Bulletin 851 of the Department of Agri- 

 culture. Where large quantities of manure are produced on a farm 



^0 



Fig. 7. — Hodge type window trap. At left, trap with end removed to show construction ; 

 at right, cross section of trap placed in a window. A, End of trap. B, Upper side of 

 folds in screen. (', Lower side of folds in screen. D, Portion of end of trap sawed out 

 and returned after attacliing screen. E, Holes along apex of folds. F, Door for re- 

 moving dead flies. O, Window sill. H, Upper window sash. /, Inside entrance for 

 flies. O, Outside entrances 



this method of storing the manure on a platform and trapping the 

 maggots which breed out may be more convenient than the manure 

 bin. 



WINDOW TRAPS 



Prof. C. F. Hodge has designed a trap which is really a modified 

 tent trap adapted to use in a window. This trap is constructed so 

 as to catch the flies as they enter or leave through the window. It 

 is adaptable to barns which are fairly free from cracks or other places 

 where flies may enter. It may also be used on windows of buildings 

 where foodstuffs are prepared aud where flies endeavor to enter 

 through the windows or escape after having gained entrance through 

 other passageways. All openings not provided with traps should be 

 closely screened, and on large buildings traps may be installed in 

 every third window. 



This trap is essentially a screen box closely fitted to the frame of 

 a window (see fig. 7). The thickness of the box at A should be about 

 12 inches. Instead of the screen running straight down over the box 



