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0299 Southern Tibet : vol.3
南チベット : vol.3
Southern Tibet : vol.3 / 299 ページ(カラー画像)

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doi: 10.20676/00000263
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CENTRAL TRANSHINIALAYA WAS, BEFORE 1907, A TERRA INCOGNITA.   225

maient un obstacle insurmontable. En conséquence, je résolus de suivre le premier cours d'eau dont la direction ferait présumer qu'il se dirigeait vers le Brahmapoutra. — C'est ainsi que nous cheminâmes plusieurs jours en suivant les bords d'une rivière sans cesse grossissante appelée 'Chang-Chu' que des Européens voyaient pour la première fois . . .»

This is all we are told of this remarkable crossing, the last before I had the

good fortune to cross seven hitherto unknown passes in the Transhimalaya and one

which was known before.

The first communication of my Transhimalayan discoveries I sent from Simla

to the Royal Geographical Society. It was a photograph of a very rough sketch-map

which I had drawn to illustrate my lecture at Viceregal Lodge, September 24th,

1908. It was never meant to give anything else than an idea of where I had been,

and to show the principal ranges which constitute the central Transhimalaya. In a

note to the map I said : 2 »Of course, you will easily understand that the whole east

and west parts of the Transhimalaya were known before, but one third of the

range, or rather system, situated exactly where you have the word 'Unexplored' on

the Society's map of Tibet, is absolutely new, and I have been able to show very

clearly that the whole lot is one single system.»

It was too generous to say that the whole east and west parts were known

before. They had been crossed by a few pioneers and we possessed a few sections

with long distances between them. But the orography and geology of the mount-

ains remained extremely little known, and so is the case to the present day.

As to the Central Transhimalaya it was absolutely unknown. A part of it

had been skirted by Nain Sing in the north, its southern flank had been followed

by Ryder's and Rawling's memorable expedition. Between the routes of these two

expeditions the terra incognita was situated, and I went out to fill up the blanks so

far as my forces allowed.

IS

I George Bogle had seen it in 1774.

1 Geographical Journal, November 1908, Vol. XXXII, p. 527.

29-141741 III.