3/8 INSECT HEARING. 



blade upon a ground glass plate. But after cutting off its front 

 legs it sprang forwards with a start at every sound. 



21. A freshly caught insect whose front legs had been removed, 

 responded regularly to certain violin notes, B' E'" B'", moving its 

 antennae and legs alternately during the continuance of the sounds. 



22. One cricket with its legs cut off continued for two days to 

 chirp at intervals of lo minutes, unless disturbed by any noise 

 such as scratching on glass, or even a wire grating, when it stopped 

 at once to begin again a little later. 



23. An insect was allowed, after its front legs had been cut off, 

 to run on the table. x\fter a time it stopped with Its antennae 

 stretched out for a considerable time when not disturbed. When 

 the violin tones B, C, or E'" were sounded the insect moved its 

 antennae in various directions and occasionally it sprang aside. 



24. The three pairs of legs were cut off and the insect laid on 

 its back on the table where in a short time it lay quiet. The same 

 violin tones were played at varying distance, and it was seen to 

 respond regularly when the tone came from a distance of not less 

 than 3'. But with tones produced by striking a knife against a 

 drinking glass, it responded first when the sound was only 1' 

 distant 5 when the sound was brought nearer, the insect's trunk 

 was violently distorted. 



25. One of the crickets whose front legs had been cat off, 

 stood in the middle of its cage on the turf cleaning its antennae 

 which it brandished about in all directions though there was no 

 noise. On scratching with the linger nail upon a wire grating the 

 insect suddenly plunged and moved backwards. 



26. The same insect was unexpectedly greeted, while at its 

 meal, with a powerful chord drawn from the violin. It set itself 

 up in an instant, stood still a moment, stretched its antennae 

 forwards. At a second chord it took to violent flight with such 

 force as to upset itself. An uninjured insect in the same cage 

 remained unaffected by the sounds. 



27. On a sunny afternoon I approached close to a cricket 

 standing by its hole, and made various noises with a bunch of keys? 



