i89i.] 



ENTOMOLOGICAL NEWS. 



diameter and made of tin, or any other suitable material, but 

 paste-board answers the purpose, and is not expensive. 



Procure a two-quart glass fruit-jar with an air-tight top and 

 fasten in it at the bottom two ounces of Potassium cyanide, 

 and place plenty of paper packing over it. Add a few drops of 



water to the packing to 

 moisten the cyanide and 

 then close the jar till 

 wanted for use. With 

 proper care the cyanide 

 will retain its strength, 

 and can be used during 

 the collecting season. 



The next part of the 

 trap is a lamp that gives 

 a bright light. A wire 

 ring should clasp the lamp 

 below the oil bowl. This 

 ring should have three 

 small wires fastened to it, 

 equal distances apart, and 

 extending upwards two 

 feet and twisted together 

 down to near the chimney 

 and have a loop on the 

 upper end to hang the 

 lamp by when in use. 



On a dark, still evening 

 in the spring-time, when 

 insects are on the wing, 

 fasten the funnel to the 

 side of a building, or some 

 other suitable object, with 

 its small end resting 

 snugly in the mouth of 

 the cyanide jar, and then suspend the lighted lamp in the funnel 

 to shine forth from the front opening and let it remain there for 

 a few hours, then close the jar till morning, and by the light of 

 day open and spread its motionless and silent contents on some 

 white paper, then the entomologist will enjoy a treat such as is 



