Clarence E. Mulford, The Bar-20 Three (1921)
“ Kane's trail-boss slanted his watch under the moon's rays and gave a low, natural signal, whereupon to right and left a man detached himself and left the waiting group. Minutes passed, their passing marked on nervous foreheads by the thin trickle of cold sweat. Any instant might a challenge, a shot, a volley ring out on any side; hostile eyes might be watching every movement, hostile guns waiting for the right moment, like ravenous hounds in leash. The scouts returned as silently as they had departed and breathed their reassuring words in Roberts' ear. ”
