 Together with two younger Britons, the officer Francis Younghusband and the diplomat Harry English Fulford, he explored Manchuria, travelling through the frontier areas of Chinese settlement in the region and to the Changbai Mountains.He published his travel notes, and a solid dose of background information, in a book, "The Long White Mountain, or, A journey in Manchuria...".Over a century later, the factual material contained in a work still served as a major source for the historians of the region.