J. H. Patterson, The Man-Eaters of Tsavo — Chapter 27
“ Fortunately the invaluable Landaalu had discovered a good crossing over the swamp, so we were able to press on at a good pace without losing any time in overcoming the obstacle. After an hour or so of hard travelling, we were delighted to see a rocket go up, fired by my friends to guide us on our way. Such a sight is wonderfully cheering when one is far away from camp, trudging along in the inky darkness and none too certain of one's direction; and a rocket equipment should invariably be carried by the traveller in the wilds. ”
