10 



Figs. 4, 5 and 6 give details of construction. This trap is easy 

 to make and the cost of material is smalL It has been tested 

 on the agricultural grounds at Washington and also in the 

 Missouri Botanical Gardens at St. Louis, and has caught 

 hundreds of sparrows in a few weeks. 



The following directions for making this trap are taken from 

 Farmers' Bulletin 493: — 



The essential parts of this trap are: (1) a half funnel leading into 

 (2) an antechamber, which ends in (3) a complete funnel leading into 



Fig. 5. — Pattern for first funnel of a trap to be 36 by 18 by 12 inches. 

 (After Biological Survey.) 



(4) a final chamber. It is made of woven wire poultry netting of three- 

 fourths inch mesh, and is re-enforced around the open end and along 

 the sides at the bottom by No. 8 or No. 10 wire, which is used also around 

 the aperture for the door and around the door itself. The angles between 

 the first funnel and the walls of the antechamber are floored with netting 

 and the final chamber is floored with the same material. The accompany- 

 ing drawings will enable anybody handy with tools to construct one of 

 these traps in a few hours. These plans are for a trap 3 feet long, a foot 

 and a haK wide, and a foot high. At ordinary retail prices the cost of 

 material will be about 70 cents. Paper patterns for the two funnels 

 can be made by first drawing the concentric circles, as shown in Figs. 

 5 and 6, and then laying off the straight lines, beginning with the longest. 

 The wavy outlines indicate that the pattern is to be cut half an inch 

 outside of the straight lines to allow extra wire for fastening the cones to 



