484 ANIMAL INTELLIGENCE 



or note-book, in which all the observations that she 

 made when I was absent were entered. It was originally 

 my intention to make an abstract of this note-book ; but 

 on afterwards reading it through for this purpose, it 

 seemed to me that I should rather spoil matters by 

 attempting a condensation. There is a certain graphic 

 effect incidental to the diary form and spontaneous style 

 of diction the notes, of course, not having been written 

 with a view to verbatim publication ; and besides, as the 

 psychology of monkeys has been so little studied, I think 

 it is well to give all the details of a continuous series of 

 observations. It is desirable to add that on occasions sub- 

 sequent to the taking of this or that particular note, I 

 generally had the opportunity of verifying the observation 

 myself; but I may state that I attach no more importance 

 to this circumstance than I should to verifying an obser- 

 vation of my own ; for as a careful observer of animals I 

 have quite as much confidence in my sister as in myself. 

 It only remains to explain that my mother, being an 

 invalid, is confined most of the time to her bedroom ; 

 and that the monkey was kept there for the first six weeks 

 of his stay at her house, partly in order that he might be 

 under constant observation, and partly also to furnish her 

 with an entertaining pet. The following are my sister's 

 notes in extenso and without alteration : 



Brown Capuchin (C ebus fatuellus Linn.), Brazil. 

 DIARY, 1880. 



December 18th. Arrived in box with keeper. Seemed rather 

 frightened and screamed a good deal on being transferred from 

 small box to a larger one. 



19th. Took him out of the box he had been in all night and 

 fastened chain on to collar. "Was meek and subdued, hiding his 

 face in my lap. 



20th. Has become much more lively and somewhat aggres- 

 sive, especially towards the servants. He has taken a fancy to 

 my mother, and (she holding his chain) he plays with her in a 

 gentle and affectionate manner in her bed, but flies angrily at 

 any of the servants who come near the bed. I observed to-day 

 that he breaks walnuts (which are too hard for him to crack 

 with his teeth) by striking them with the flat bottom of a dish 



