84 NEW TRACKS IN NORTH AMERICA. 
Europe, or in ‘any country where the atmosphere is mud 
impregnated with moisture. For more than one hundre 
miles in almost every direction, nothing seemed to limit : 
extent of our vision but the incapability of our eyes | 
distinguish objects which were rendered too small by the 
remoteness. 3 
Our guide knew the cafion we were in search of, 4 
brought us next day directly to its head. It was not by 
means a gap in the range, but only a large and well-def 
gorge on the western sides. We followed it down to 
plain. Two miles from the summit a large spring of cl 
cold water flowed from beneath a perpendicular mass of ro 
and formed a stream, which we followed until the cafion, | 
_ out by it, became so narrow and so filled up with rocks a 
vegetation that we were obliged to bear away to the rig 
and strike it again lower down. The stream had disappea 
in the interval, and the cafion from this point gradua 
widened out, lost its fertility, and entered the plain as a ¢ 
open valley, trending towards the Gilas, scarcely twell 
miles distant. The length of this cafion, from its head abo 
the spring to its entrance as a caiiada or valley on the pla: 
is about thirteen miles. For half its course many large é 2 
beautiful trees adorn the path, amongst which we recogn 
sycamore, a very beautiful species of evergreen oak mt 
resembling holly, a black walnut (Juglans Whipplea i 
rough-barked cedar (Juniperus pachyderma), pines, piiid 
acacia, cypress, mezquit (Algarobia glandulosa), plum, | 
several species of cactus. An Indian trail led through’ 
entire length of the cafion, including the two miles of 4 
natrow gorge, and also over the hill, avoiding it, which lal 
toute we adopted. It was evident from the recent pi 
tracks that the red men still used it, and were proba 
