2 l6 
CAVE AND CLIFF DWELLERS . 
his medium of exchange, and seems to 
thoroughly appreciate its value. 
The midday lunch for a party of Mex¬ 
icans moving through the mountains is 
quite long by comparison with American 
parties under like circumstances. It was 
two hours before we got away again. 
There are probably two reasons for this, 
one being that the midday is generally 
warmer with them than with us, although 
this did not apply to us in the cool, tim¬ 
bered regions of the high sierras ; while 
the second reason is clearly found in the 
fact that they seldom feed their mules on 
these mountain trips, and must give them 
time to graze a fair-sized meal at noon. 
The Mexican packs and unpacks the 
mules twice a day, the American but 
once ; for by feeding grain he can keep 
going until they want to camp, making it 
