48 A US IT L\ AGRICULTURE 



lid not settle as quickly as the other. Tin- e<>|]>er sulphate should 

 always IK- diluted with nearly all the water l>el'nre tin- lime is added. 

 Some bulletins state that h<th should he diluted and then nut to- 

 gether, but this way is quite as good and is easier. 



Ex. 49. Insect Net. 



Material : a handle about three feet long (an old broom stick 

 will do), a piece of No. 3 galvanized wire three feet six inches long, 

 and three-fourths of a yard of cheese cloth. 



Bend the wire into a ring about a foot in diameter and bend back 

 about three inches of each end to insert into a hole made in the end 

 of the handle. Fasten securely. Make the cheese cloth into a bag 

 with rounded bottom and just wido enough to fit the wire loop; fasten 

 sen i rely. 



Ex. 50. Killing Bottle. 



Take any small, wide-mouthed bottle a quinine bottle or pickle 

 bottle will do. Secure a cork that will fit the bottle closely, and that 

 is long enough to handle easily. Get two cents' worth of cyanide of 

 potassium, and one cent's worth of plaster of Paris. Put the cyanide 

 in the bottle, cover with water and add the plaster of Paris until 

 all the water is soaked up. Leave the bottle open in a shady place 

 for an hour, when the plaster should be hard. Cork the bottle and 

 label it poison. Now it is ready for use. 



Caution. Do not breathe the fumes of the bottle. 



Ex. 51. Insect Box. 



Secure an empty cigar box. Cover the bottom with some soft ma- 

 terial as cork, cork linoleum or pith of dried corn stalks. Fasten 

 this material to the bottom of the box with .glue and cover with 

 white paper. 



If your collection is to be a permanent one, make a glass cover 

 for the box and fit it air tight. 



Ex. 52. Spreading Board. 



The spreading board may be any length. Material: two strips of 

 soft wood, 11/-J inches wide and l / 2 inch thick; one piece 3*4 inches 



