18 ANIMAL ACTIVITIES. 
of prepared specimens so preserved as to be examined 
to the best advantage. It should be a part of the work 
of the pupil to prepare at least a portion of this material. 
Killing the Specimens. Place some pieces of blot- 
ting-paper saturated with chloroform or ether in the 
Fic. 25.—A Sea-cucumber. Fic, 26.—A Hermit-crab. 
bottom of a jelly-tumbler provided with a tin cover 
(Fig. 28). In this grasshoppers, butterflies, and other 
small insects may be painlessly killed. It must be 
remembered that chloroform and ether are poisonous 
Fic. 27.—A Shrimp. 
substances, and that they must not be brought near a 
lighted lamp or fire, as they ignite very readily. 
