J. H. Patterson, The Man-Eaters of Tsavo — Chapter 26
“ Waters was a great believer in a close shot, so he stalked up to within a few yards of the animal and then fired his .577, aiming for the heart. The elephant responded by a prompt and determined charge, and although Waters quickly let him have the left barrel as well, it proved of no effect; and on he came, screaming and trumpeting with rage. There was nothing for it, therefore, but to fly for dear life; so down a path raced Waters for all he was worth, the elephant giving vigorous chase and gaining rapidly. ”
