"[The object of] the expedition ... was to explore thoroughly, in the interests of horticulture and forestry, the whole of the Kansu-Tibet border, fro...
"[The object of] the expedition ... was to explore thoroughly, in the interests of horticulture and forestry, the whole of the Kansu-Tibet border, from south to north ... These two volumes deal only with my wanderings of 1914, round the extreme south-west march of Kansu and up the border."--Foreword, v. 1.