Nikolay Przhevalsky,
Mongolia, the Tangut country, and the solitudes of northern Tibet
(1876)
“ Within the last ten years the exploration of High Asia which, on our side at least, had long been languid, has revived and advanced with ample strides. So rapid, indeed, has been the aggression upon the limits of the Unknown that in the contemplation of a future historian of geographical discovery it may easily seem that the contraction of those limits in our age might fitly be compared to the rapid evaporation of the cloud with which the breath has tinged a plate of polished steel. ”
