Charles Granville Bruce,
Twenty Years in the Himalaya — Preface
(1910)
“ It is only when one pushes far afield, many days' journey from villages, in the great wastes of mountain and ice, far beyond human habitation, that the porter question becomes really vital. Roads fit for animals are few and far between, though the domesticated yak does yeoman service whenever he can be obtained, and is a most wonderful animal, clumsy in appearance, but walking with apparent ease over ground that would puzzle any pony or mule, and quite happy in a climate which would be fatal to either without shelter or protection. ”
