1890 SALLY 241 



Have you got the ' Contemporary Eeview ' for 

 June with my article on Darwinism ? If not, I will 

 send it. 



Another bit of work was an investigation into 

 the inteUigence of the chimpanzee ' Sally ' at the 

 Zoological Gardens, which the following letter de- 

 scribes : 



SAVAGE YEEsus BEUTE. 



To the Editor of tJie ' Times ' (Sejyf. 19, 1888). 



Sir, — In connection with the correspondence on 

 the powers of counting displayed by savages, it may 

 be of interest to narrate the following facts with 

 regard to similar powers as displayed by brutes. 



One often hears a story told which seems to show- 

 that rooks are able to count as far as five. The 

 source of this story, however, is generally found to 

 have been forgotten, and therefore the story itself is 

 discredited. Xow, the facts stand on the authority 

 of a very accurate observer, and as he adds that they 

 are ' always to be repeated when the attempt is 

 made,' so that they are regarded by him as ' among 

 the very commonest instances of a nim al sagacity,' 

 we cannot lightly set them aside. The observer in 

 question is Leroy, and the facts for which he 

 personally vouches in his work on animal intelligence 

 are briefly as follows : 



' The rooks will not return to their nests during 

 daylight should they see that anyone is waiting to 

 shoot them. If to lull suspicion a hut is made below 

 the rookery and a man conceal himself therein, he 



B 



