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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| 0412 |
Southern Tibet : vol.2 |
| 南チベット : vol.2 |
引用情報
OCR読み取り結果
CHAPTER XLII.
EUROPEAN SPECULATION BEFORE RYDER'S SURVEY.
In this chapter I will only give a few examples of different European geo-
graphers' opinions regarding the northern tributaries and the northern watershed of
the Tsangpo. On BRIAN H. HODGSON's map the watershed is formed by an
enormous range, which we shall consider later on. From its southern side the tribu-
taries of the Tsangpo come down. They grow slowly larger towards the east. They
are very like each other and one sees that everyone of them is home-made. There
is not a line on this map that has a remote resemblance with really existing facts.
The single tributary which can be identified is the Ki-chu, and that only by help of
›Hlassa‹, situated on its bank. As compared with this map D'ANVILLE's and the
Ta-ch'ing maps are ideals of exactness and correctness.
On SAUNDERS' map, which was also published in Markham's book on Bogle
and Manning, the same gigantic range is generally the northern watershed, but the
tributaries are drawn as found by Nain Sing. Only the Charta Sanpo breaks
through the watershed range. Some of the plateau lakes and rivers are taken from
the Ta-ch'ing map or d'Anville's, and Nain Sing's new lakes, Dangra-yum-tso and
the rest, are also there.
On GRAHAM SANDBERG's very rough sketch map¹ there is, just south of Nain
Sing's lakes, a long range, Torgot Gangri, stretching west to east. The ›Chhorta
Chhu‹ or Chaktak-tsangpo begins even a short distance north of that range, at the
same latitude as the southern shore of Dangra-yum-tso. But Tsa Chhu and Naku
Chhu begin at the southern slopes of the western continuation of that same range.
Sir THOMAS HOLDICH's opinion is expressed in the following words:² ›Some-
where on the southern edge of the Chang is the water divide of India. No one
has defined its exact geographical position. Some of the gigantic lakes of Central
Tibet may possibly be within the Indian basin, but of many of them it is known
that they have no outlet.‹ He even speaks of ›the valley of the upper Brahmaputra,
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30
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41
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51
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62
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73
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83
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95
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109
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121
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132
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144
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155
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167
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177
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187
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198
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209
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223
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237
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249
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259
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269
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279
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289
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305
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323
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334
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345
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356
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367
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381
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393
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403
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410
411
412
413
414
415
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428
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445
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461
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473
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487
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503
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517
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532
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