HOW TO KNOW THE INSECTS 



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Pciper Wad 



j-Plaister 



:;1 Cyanide 



bottles \vlth wide mouths, 

 such as small olive bot- 

 tles, are best for gen- 

 eral purposes. If a 

 quantity of killing bot- 

 tles Is being made the 

 heavy cream test bottles 

 1 1/4 inches In diameter 

 and 5 Inches high are 

 ideal. Fill the bottle 

 to a depth of a half 

 inch v/ith cyanide and 

 cover this with a thin 

 layer of cotton and a 

 tightly fitting wad of 

 cardboard to hold it se- 

 curely in place; or the 

 poison may be covered 

 with cellucotton firmly 

 tamped down. Some like 

 large celluloid vials as 

 they do not break if 

 dropped. For insects 

 with large expanded 

 wings, such as butter- 

 flies and dragon flies, 

 large bottles with wide 

 mouths or pint or quart 

 fruit jars are desir- 

 able. The poison may be 

 put in the bottom or 

 wrapped in a sm.all pack- 

 age and fastened to the 

 side of the bottle virith 

 gummed paper. SomiC use a layer of sawdust on top of the poison 

 and a layer of plaster of Paris covering this to hold all In 

 place. This scheme Is good but rather mussy to make and requires 

 some tlm.e for the plaster to dry. 



Other killing agents such as chloroform, ether, gasoline, 

 benzine, and carbon tetrachloride, are sometimes used by collect- 

 ors who fear the deadllness of cyanide. All killing bottles 

 should be plainly marked POISON and kept out of reach of small 

 children. 



Many kinds of small Insects may be put directly into vials of 

 80% alcohol for killing and preserving. This plan works well 

 with small beetles, ants, and many true bugs but should not be 

 em.ployed with Insects covered with scales or hairs such as bees, 

 files, moths, etc. 



Nets 



Figure 6, liillln^ Bottles (Keduced slzo^ 



Nets are of three types: Aerial nets for catching Insects in 

 flight; sv/eeplng or beating nets for taking Insects hidden in 

 vegetation and water nets for securing aquatic Insects. All 

 three should be comparatively light but made of strong and dur- 

 able materials. These may be bought from the supply houses or 

 may readily be made at home. A net consists of a cloth bag, a 

 metal ring to hold the mouth of the bag open and a handle to 



