INSECT HEARING. 377 



14. A freshly captured and quite uninjured field cricket did not 

 respond to the violin tones when lightly drawn, but did so regularly 

 when the bow was firmly drawn. 



15. Another fresh from the field responded but feebly to strong 

 notes sounded at longer intervals, but became more sensitive to 

 sounds when its hinder legs were cut off. Every three minutes 

 when the notes were played, it started, stretched forth its antennae, 

 rested a moment, and then crawled onwards a little. Its front 

 legs were now cut off, but it responded regularly as before to 

 various notes. On continuing uninterrupted play with the violin, 

 the insect scarcely moved, but on ceasing, and then afterwards 

 playing single notes with sufficient intervals, it responded. 



16. A field cricket which had been kept a considerable time in 

 a roomy box, the bottom of which was lined with turf, sprang 

 regularly about to the notes of a violin, and when its antennae as 

 well as front legs were removed. 



17. A cricket which had chirped busily all day long, had its 

 front legs cut off. It had the company of two females in its cage. 

 In a few minutes it began to chirp, and continued to chirp as 

 before. When the violin notes were sharply drawn the insect 

 sprang regularly forward. Running up the scale it was found that 

 a high note (G'") excited much more decidedly than the deeper 

 notes of the E string. This same insect chirped through the 

 whole night ceasing immediately when a noise was made with the 

 door handle. 



18. A young insect kept in a large bottle always moved its 

 antennae when two rules were struck together. 



19. A fresh caught cricket showed indifference to all noise and 

 even to trembling of the table ; but when its hind legs were cut 

 off it responded to every shake of the table by moving its antennae, 

 dropping them after each sound. 



20. Two crickets were kept in a cage of whom one chirped 

 almost unceasingly, whilst the other was obstinately silent. The 

 first was not in the least disturbed by noises made with a pen 



