Fig. 11. A. Locking 

 D. Various ways 

 from net. 



the thumb and forefinger before placing 

 them in the cyanide jar (See Fig. 12). 



Many butterflies when dying fold the 

 wings below the body. These should be 

 taken out of the killing bottle and the 

 wings folded up over the back within a few 

 minutes after their struggles have ceased. 

 Otherwise, their muscles will stiffen mak- 

 ing it hard to mount the specimens with- 

 out rubbing the wings. 



Anyone engaged in extensive collecting 

 should carefully follow the rules given be- 

 low: 



1. Keep small, delicate insects in a bottle by 

 themselves. Insects such as large beetles are apt 

 to mutilate small flies, etc., if kept in the same 

 bottle. 



specimens in net. B, C, 

 of removing specimens 



2. Keep a special bottle for moths and butter- 

 flies. These insects shed large quantities of scales 

 which have a tendency to cover the bodies of 

 other insects. 



3. Use a killing tube for small insects. This 

 may be made of glass, using a so-called ignition 

 tube or an unbreakable celluloid tube. The 

 cork can be removed and the tube held in one 

 hand, with the thumb kept over the opening. 

 Specimens crawling up the sides of the bag can 

 then be captured easily. (See Fig. 13.) 



4. Keep the inside of the bottle dry. Moisture 

 from the insects and plaster condenses on the 

 inside of the bottle. This will mat hair and 

 appendages as well as discolor many specimens. 

 Change toweling or cotton when moisture ap- 

 pears on the side of the jar. 



5. Remove insects as soon the they are dead. 

 Cyanide fumes soon turn many yellows to red 

 or orange and also make many small specimens 



