国立情報学研究所 - ディジタル・シルクロード・プロジェクト
『東洋文庫所蔵』貴重書デジタルアーカイブ
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| 0414 |
Southern Tibet : vol.2 |
| 南チベット : vol.2 |
引用情報
OCR読み取り結果
birth to these feeders. This range passes eastward from forty to seventy miles north
of the general line of our river, and in the main forms the southern watershed of
the great lake plateau. However, recent exploration shows that, in the case of
several of the great northern feeders of the Tamchhok, in the first and second sec-
tions, they rise further north still than the Gang-dis-ri range, and even on the lake-
plateau itself. They pass through gorges between lofty peaks in this range, much
as do the Indian rivers in their course through the Southern Himalayas. We inter-
polate these remarks here, because the Chhorta Tsangpo, which bounds our Second
section (from Chhorta to Shigatse) is one of the great feeders, whose early course
has been traced back north beyond the Gang-dis-ri range; its primary sources being
found in certain lakes to the S.W. and S. of Dangra Yum T'so.
I should have inserted this passage after Ryder, but as Sandberg has not at
all used Ryder's authority, it rather belongs to mere speculation. He concludes that
the considerable volume of the northern tributaries prove a long course. Therefore
he removes the northern watershed to the north. Thus the massive mountain-range
situated here, should most likely be regarded as the watershed. But that has been
found not to be the case. It would be interesting to know which recent explora-
tion has followed the northern tributaries up on the lake-plateau itself! I had not
yet begun my journey when Sandberg wrote, and Ryder had arrived at the opposite
conclusion to Sandberg's recent exploration. In reality not one of the northern trib-
utaries comes from the lake-plateau. And who had, in 1905, traced the early course
of the Chaktak-tsangpo back north beyond the Gang-dis-ri? Sandberg's description
of this part of Tibet is mere fiction. If he had said old instead of recent explora-
tion, one would have thought of the Lamas and of the Ta-ch'ing map. Probably
he has got his impressions from Saunders' map, which, for this part of Tibet, is
also mere fiction.
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503
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517
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532
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