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0358 The Pulse of Asia : vol.1
アジアの鼓動 : vol.1
The Pulse of Asia : vol.1 / 358 ページ(カラー画像)

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doi: 10.20676/00000233
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sion also; for in those ancient days Lop-Nor was called *the*
"Great Salt Lake." No one would think of calling it so
to-day, for the greatest expanse of open water is only five
or ten miles. As to a somewhat later time, we have the evi-
dence of the earliest Chinese map, which is reproduced on
page 285. The exact date of its compilation is not known,
but it was certainly after the fall of Lulan, for that place is
not indicated; and it was certainly many centuries ago, for
the Tarim is represented as still following the course of the
Dry River. The Tarim discharges into the northern depres-
sion, where it forms what is represented on the map as a rela-
tively small lake, not much larger than that of to-day. The
southern depression is occupied by a still smaller lake, called
Ghas-Nor, and fed, we suppose, by the Cherchen River.¹
In course of time, the Tarim River left its old bed and occu-
pied one after another of the various channels shown on
the map, being deflected continually farther and farther to
the right, so that now, for several centuries, it has discharged
into the southern depression.

Hedin believes that the cause of the right-handed de-
flection of the Tarim River is to be found partly in a sup-
posed, but as yet unproved, motion imparted to the water
of all rivers by the rotation of the earth, and partly to the
unquestionable effect of the prevailing northeast gales in
driving the water in erosive waves against the right bank of
the river, and in filling up the left side of the channel with
wind-blown sand. It seems to me that the peculiar action