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

mountains 80 li north-east of Lang-chuan-ka-pa-pu. Two streams flow westwards
from the mountain and turn north-westwards after their junction. It now takes a
sinuous course for 60 li, turns south-westwards, and joins the main river. This is a
source.]

The river flows further to the west-by-north for 40 li, then to the north-east,
to be met by the water of Lake Kung-shêng¹ which sinks underneath the ground
of the lake basin, but which, after reappearing, and after receiving three northern
affluents, runs south-westwards to the river.

[The Lake of Kung-shêng-o-mo has two sources, one coming from the north-
east, from Ta-ko-la-kung-ma-shan,² and flowing 150—160 li, the other from the east,
from the western foot of Ma-êrh-yo-mu-ling³ in the western frontiers of Cho-shu-tê.
This last-mentioned mountain forms the eastern boundary of A-li and is the chief
range going south-eastwards from Kang-ti-ssŭ. The water (of the Lake Kung-shêng)
flows westwards for more than 50 li and forms another lake, 80 li wide and without
an outlet. However, more than 10 li farther to the west, there is a third lake with
a subterranean source and with a length of 30 li. A stream comes from north to
the lake. The river now flows south-westwards for 60 li, and receives a stream
coming from the north-east. 40 li farther south-westwards it receives a stream coming
from the northern mountains, further south-westwards, the river meets the water from
Lang-chuan-ka-pa-pu-shan.]

The water forms Lake Ma-piu-mu-ta-lai.⁴ [From south to north it is 150 li
long, from east to west 80 or 100 li wide, and has a circumference more than
200 li. On the northern side of the lake there are two streams coming from the
north. The lake is situated 120 li to the south of Kang-ti-ssŭ.] The water flows
out from the west of the lake into Lake Lang-ka⁵ in a distance of 60 li. The
latter lake receives a stream coming from the N.E. [Lake Lang-ka has a narrow
rectangular shape, pointed and elongated, the length from south to north being
170 li and the width from east to west 100 li. Its northern pointed corner has the
stream coming from north-east. There are three sources on the southern foot at a
distance of 70 li from a southern branch of Kang-ti-ssŭ; they flow southwards, unite
into a stream, which takes a south-westerly course for 150—160 li before entering
the lake. The lake is same⁶ in circumference and area, but different in outline.]

The water (of Lake Lang-ka) flows out from the west, and after running west-
wards for more than 100 li, it turns to the S.W. It is now called the Lang-chu-
ho,⁷ and takes a sinuous course for more than 200 li. Then it receives the