374 INSECT ilEARING. 





BY H. E FRIPP, M.D. 



DR. V. GRABER'S experiments were made upon the field 

 cricket, which possesses, as is known, a very subtle faculty 

 of hearing. 



1. A cricket stands quietly on the table. On striking the table 

 sharply with a hammer the insect moves its antennae in various 

 directions. At some distance from the table a rasping sound is 

 made with a file. The cricket instantly begins to crawl a little, 

 sometimes brandishing its antennae actively in the air. At another 

 blow on the table the insect either stands still or moves its 

 antennae after each blow, or advanced, between while, forwards. 



2. A cricket was placed under a glass shade. As soon as the 

 table was gently struck with the hammer, causing it to shake, the 

 insect became greatly excited, — springing here and there, making 

 somersaults, and striking against the sides of the glass shade. It 

 did the same, but less violently, when a sharp tone was produced 

 by scratching the point of a pen knife upon a piece of polished 

 iron. Thus it appeared that the insect was more affected by the 

 light trembling of the table than by the sharper blow and 

 disturbance. 



