522 RINGGOLD BARRACKS 
There was every indication that it had recently been 
filled with water; but we sought for some in vain. 
Deeply worn paths made by the mustangs were seen 
in every direction, showing that it was a place of re- 
sort for these animals. After travelling eight hours 
we reached a chain of lagunas called Los Olmos, which 
crossed our path. Having travelled more than twenty 
miles over a sandy road, and our animals showing 
signs of great fatigue, we encamped. The water was 
sweet and the grass abundant. 
December 31st. A portion of our journey yesterday 
was over the prairie, where there was no trace of a 
road. To-day continued the same; yet the man who 
pretended to guide us seemed familiarly acquainted 
with it. A few hours after leaving, the prairie near 
the horizon seemed to be moving, with long undu- 
lations, like the waves of the ocean. Unable to account 
for this singular appearance, I looked with my tele- 
scope, when, to my surprise, I discovered the whole 
prairie towards the horizon alive with mustangs. Soon 
after they could be seen coming towards the train. 
Major Emory at this time was in advance of me 
about half a mile with his portion of the wagons. We 
saw the long line of mustangs approach him, and soon 
after pass before, the whole herd following after, and 
extending as far as the eye could reach across the 
prairie. The mules became restive, and we could see 
the teamsters hurrying forward the wagons for protec- 
tion behind each other. On went the great stream, 
and the next moment one of the mule teams in ad- 
vance sprang from the train and dashed off at full 
speed after and among the wild horses. The teamster 
