excessive wind-erosion. Its triangular area A descriptive account of my explorations
is limited to the west and south by the Tarim of 1906-07 in the Lop desert and among the
and its terminal marshes, and to the east by ruins of the Lou-lan Site is given in Desert
the salt-encrusted bed of the ancient dried- Cathay, i. pp. 359 sqq. The ancient topo-
up Lop sea. Within this area the Kuruk graphy of the Lou-lan territory and the
darya, the Dry River', once fed by the physical features of the Lop desert, having a
Konche-darya and partly, perhaps, also by direct bearing on the early Chinese route
branching beds of the Tarim river, had its which passed through it, have been fully dis-
delta during early historical times. cussed in Chapter ix-xi of Serindia; see in
Its water rendered nomadic occupation particular, i. pp. 332 sqq., 34.0 sqq., 349 sqq.,
of the riverine belt in the north possible for 416 sqq. For a preliminary account of my
the indigenous herdsmen and fishermen of renewed explorations in the Lou-lan region,
Lou-lan, and along the same belt passed, during the winters of 1914 and 1915, cf.
until the beginning of the fourth century Geograph. Jonrnal,1916, xlviii. pp. 120 sqq.,
A. D., the ancient Chinese highway from 206 sq. ; Geographical Review (New York),
Tun-huang. Its line is marked by the ix. pp. 11 sqq.
ruins of the Lou-lan Site and those explored Corrections. A. 4. Chong-köl-satma to
by me to the west and north-east of it (D.3). be printed black.
The extension of the K uruk-darya delta C. 4. Symbols for ancient dwellings at
much further to the south, too, is proved for L. M. Site (Camp xcii) should be printed red.
the same period by the ancient river-bed, D. 3. ' Lou-lan Site' should be printed
traced along the ruined sites which stretch red.
from L. R. to L. K. (C, D. 4). 15
Astronomically observed latitudes.
1906-08. Lou-Ian Station, L. A., Camp 124 (Stûpa ruin, near N.E. corner of