Jacob Abbott,
Rollo in Switzerland
“ If a traveller were to fall into any deep pit, or crevasse, or to slip down some steep slope or precipice, so that he could not get up again, the guides might let the rope down to him, and then when he had fastened it around his waist they could draw him up, when, without some such means of rescuing him, he would be wholly lost. In the same manner, when a party are walking along any very steep and slippery place, where if any one were to fall he would slide down into some dreadful abyss, it is customary for them to walk in a line with the rope in their hands, each one taking hold of it. ”
