LIMITATION OF INSTINCT. 257 



instances which might be recorded seem to show great 

 limitation of intelligence. 



Let me give one other, which any person may easily 

 test for himself. I took a glass shade or jar eighteen 

 inches long, and with a mouth six and a half inches 

 wide, turning the closed end to the window, and put in 

 a common hive bee. She buzzed about for an hour, 

 when, as there seemed no chance of her getting out, 

 I put her back into the hive. Two flies, on the 

 contrary, which I put in with h'er, got out at once. 

 Again I put another bee and a fly into the same glass ; 

 the latter flew out at once. For half an hour the 

 bee tried to get out at the closed end ; I then turned 

 the glass wdth its open end to the light when she flew 

 out at once. To make sure, I rejoeated the experiment 

 once more, wdth the same result. 



And yet there is, no doubt, ample foundation for the 

 ordinary view which attributes considerable intelligence 

 to the bse, within the sphere of her own operations. 



Several other poiLts of resemblance between 

 instincts and habits could be pointed out. As in 

 repeating a well-known song, so in instincts, one action 

 follows another by a sort of rhythm. If a person be 

 interrupted in a song, or in repeating anything by rote, 

 he is often forced to go back to recover the habitual 

 train of thought; so P. Huber found it was with a 

 caterpillar, which makes a very complicated hammock; 

 for if he took a caterpillar which had completed its 

 hammock up to, say, the sixth stage of construction, 

 and put it into a hammock completed up only to the 

 third stage, the caterpillar simply re-performed the 

 fourth, fifth, and sixth stages of construction. "If, how- 

 ever, a caterpillar were taken out of a hammock made 



