MENTAL POWERS. 
51 
j . 8 dearly all the less cunning or weak-minded rats 
^ 6en successiTel y destroyed by him. To main- 
a . ’ 111 dependent! v of any direct evidence, that no 
infill <lurin S the course of ages has progressed in 
of’ ti ' Ct 01 ot her mental faculties, is to beg the question 
a c . . 16 P v °hition of species. Hereafter we shall see that, 
8e _° 1C lll g to Lartet, existing mammals belonging to 
toJ 6 - 01 ’d e rs have larger brains than their ancient 
j' ai ’y Prototypes. 
hut i 3 °h en been said that no animal uses any tool ; 
fru‘f 6 c h lm panzee in a state of nature cracks a native 
oaf I* Somew hat like a walnut, with a stone . 23 Eengger 21 
hai-f/ an American monkey thus to break open 
Use!] h ‘'ha-nuts, and afterwards of its own accord it 
Ves ^nes to open other kinds of nuts, as well as 
hark 8 r ^ h |Us f also removed the soft rind of fruit that 
to o a C lsa gi’eeable flavour. Another monkey was taught 
irai-ib' 1 - ^' e hd of a large box with a stick, and after- 
ai3( j ^ d Us °d the stick as a lever to move heavy bodies ; 
a c . laYe myself seen a young orang put a stick into 
the ' 1Ce> sIi P his hand to the other end, and use it in 
tio n P i° Per rnanner as a h;ver. In the cases just men- 
hut tl Stones an d sticks were employed as implements ; 
°Q tl 1Gp aro likewise used as weapons. Erehm 25 states, 
that ^ a, dhority of the well-known traveller Schimper, 
s pecii> n ^yssinia when the baboons belonging to one 
fain. 1 ' 8 ^ a ^ a ) descend in troops from the moun- 
ts 0 Plunder the fields, they sometimes encounter 
fj rr ] h S °f another species (C. hamadryas), and then a 
the tt 1181168- p he Geladas roll down great stones, which 
amadryas try to avoid, and then both species, 
1 813.44^° Wyman in ‘Boston Journal of Nat. Hist.’ vol. iv. 
a i g.’. p ' ' “?■ 
2s irn. n Setliiere yon Pamo-„o„ > iaon = 51-56. 
i83 °’ s - 
uebcn, B. i. s> 79 j g 2- 
E 2 
