292 



AGRICULTURE, 



ner off, and firmly sew the open end to the wire, 

 as in Fig. 98. 



2. Cyanide Bottle for Killing Insects. — Place 

 in a wide-mouthed bottle, which will hold about 

 a pint, a few small pieces of potassium cyanide. 

 This should be handled with great care, as it is 





KIG. 99. — CYANIDE BOTTLE. 



l^iiiiiiili^iii 



FIG. 100. — BREEDING-JAR 

 FOR REARING INSECTS. 



extremely poiso7ions. Now cover the cyanide 

 with a layer of plaster of Paris. Thoroughly 

 moisten the plaster of Paris with water, pouring 

 it in slowly through a funnel to prevent the 

 sides of the bottle from being smeared. Let it 

 stand until the plaster of Paris sets. Remove 

 any surplus water, and allow the bottle to be- 

 come thoroughly dry before using. Tightly 



