Apes. 5 



her mouth, picks up the fifth, and hands the whole 

 number to her keeper. She can appreciate size as 

 well as numbers, as is proved by the fact that she 

 will at command pick up a long or short straw, or, 

 when pieces of fruit of different sizes are placed 

 before her, take the largest, the smallest, or the 

 middle-sized piece, as directed by her keeper. 

 She also has an idea of colour, or at least can 

 distinguish between a light and dark straw ; for 

 being asked for a black straw, she will hunt in her 

 litter until she finds a really dark one. These, 

 though they by no means exhaust the list, are 

 among the most wonderful of her accomplishments ; 

 but they are apparently not so appreciated by the 

 public as such comparatively simple tricks as 

 leaving her food untouched until told to take it, 

 finding fruit in her keeper's pocket, or kissing 

 or shaking hands with him through the bars of 

 her cage tricks which require comparatively little 

 intelligence. 



" Sally " would appear to be sufficiently advanced 

 to have some crude ideas of sale and barter j for on 

 one occasion a lady who was watching her had in 

 her arms a suricate, and " Sally," who is fond of 

 rats, evidently mistook it for one, and desired to 

 possess it, and to this end produced all her valu- 

 ables, consisting of a piece of wood, a penny, and 

 the tin from which she had just drunk her beef-tea 

 and offered them one by one, evidently in exchange 

 for the little beast, and her fury and indignation 

 on finding her offers refused were most amusing. 



