1'90 SENSE OF HEARINO. 



The Sense of Hearing. 



The result of my experiments on the hearing of 

 bees has surprised me very much. It is generally 

 considered that to a certain extent the emotions 

 of bees are expressed by the sounds they make,' 

 which seems to imply that they possess the power 

 of hearing. I do not by any means intend to deny 

 that this is the case. Nevertheless I never found 

 them take any notice of any noise which I made, even 

 when it was close to them. I tried one of my bees 

 with a violin. I made all the noise I could, but to my 

 surprise she took no notice. I could not even see a 

 twitch of the antennae. The next day I tried the same 

 with another bee, but could not see the slightest sign 

 that she was conscious of the noise. On August 31 I 

 repeated the same experiment with another bee with 

 the same result. On September 12 and 13 I tried 

 several bees with a dog-whistle and a shrill pipe ; but 

 they took no notice whatever, nor did a set of tuning- 

 forks which I tried on & subsequent day have any more 

 effect. These tuning-forks extended over three octaves, 

 beginning with a below the ledger line. I also tried 

 with my voice, shouting, &c., close to the head of a bee ; 

 but, ID spite of my utmost efforts, the bees took no 

 notice. 1 repeated these experiments at night when 

 the bees were quiet ; but no noise that I could make 

 seemed to disturb them in the least. 



See, for instance, Landois, Zeits. f. wits. Zool. 1867, p. 1&4. 



