Tu an interesting paper read recently at the Royal Geographical Society, London, on "The Alps of Chinese Tibet, and their Geographica! Relations," Professor J. W-. Gregory, F.R.s., and Mr. J. C Gregory, B.Sc., gave an account of the expedition which they undertook into Chinese Tibet, a land full of geographical enigmas. From Bhamo, on the per Irawadi, 50 miles from the Chinese frontier, the travellers journeyed to the Treaty port of Tengyueh, in southwest China, thence to Likiang from which place they hurried northward into Chinese Tibet, where the structure of the valley of the Yangtzekiang and its two parella] neighbours, the Mekong and Salween, were studied. Floods and famine impeded the work. From Tali the expedition returned by the main road across Yunnan to the Irawadi in Burma.
The observations made during the journey show that the geography of Chinese Tibet is the result of mountain formation at two distinct periods. The deep valleys with their intermediate ranges, which are the most conspicuous topographical features, are the re sult of mountain movements' of the age of Coal Measures. Mountains belonging to a relatively modern date have been formed contemporary with the upheaval of the Alps end Himalayas. The high peaks of Chinese Tibet, rising over 24,000 ft. in height, are due to these later uplifts. The main axis of the Himsa lucas passes through Chinese Tibet, and is probably continued through the Nanshan of Southern China to the Pacific.
"The enigma of the three parallel rivers is explained as due to their
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