1834,] ZOOLOGY. 179 
the night. Shortly afterwards we came to a spot where, from 
the fresh footsteps of men, children, and horses, it was evident 
that the party had crossed the river. 
April 22d.—The country remained the same, and was ex- 
tremely uninteresting. The complete similarity of the produc- 
tions throughout Patagonia is one of its most striking characters. 
The level plains of arid shingle support the same stunted and 
dwarf plants; and in the valleys the same thorn-bearing bushes 
grow. Everywhere we see the same birds and insects. Even 
the very banks of the river and of the clear streamlets which 
entered it, were scarcely enlivened by a brighter tint of green. 
The curse of sterility is on the land, and the water flowing over 
a bed of pebbles partakes of the same curse. Hence the number 
of waterfowl is very scanty; for there is nothing to support 
life in the stream of this barren river. 
Patagonia, poor as she is in some respects, can however boast 
of a greater stock of small rodents* than perhaps any other 
country in the world. Several species of mice are externally 
characterized by large thin ears and a very fine fur. These 
little animals swarm amongst the thickets in the valleys, where 
they cannot for months together taste a drop of water excepting 
the dew. They all seem to be cannibals; for no sooner was a 
mouse caught in one of my traps than it was devoured by others. 
A small and delicately-shaped fox, which is likewise very abun- 
dant, probably derives its entire support from these small animals. 
The guanaco is also in his proper district; herds of fifty or a 
hundred were common ; and, as I have stated, we saw one which 
must have contained at least five hundred. The puma, with the 
condor and other carrion-hawks in its train, follows and preys 
upon these animals. The footsteps of the puma were to be seen 
almost everywhere on the banks of the river; and the remains 
of several guanacos, with their necks dislocated and bones broken, 
showed how they had met their death. 
April 24th.—Like the navigators of old when approaching an 
unknown land, we examined and watched for the most trivial 
* The deserts of Syria are characterized, according to Volney (tom. i., 
p- 351), by woody bushes, numerous rats, gazelles, and hares. In the land- 
scape of Patagonia, the guanaco replaces the gazelle, and the agouti the 
hare. 
