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0327 Innermost Asia : vol.2
Innermost Asia : vol.2 / Page 327 (Color Image)

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doi: 10.20676/00000187
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had greatly extended its limits since my former visit to this region. I had already become familiar in 1908 with the vicinity of the neighbouring village of Tumshuk and the road leading thence to Maral-bashi. When recording my observations, I had occasion to refer to the significant change which the line of the road has undergone here within living memory, where it winds round the foot of the small isolated hill chains rising island-like above the plain to the east and north-east of Maral-bashi.12 It will suffice to point out here that, owing to the marshy condition in which annual inundations from the Kashgar river kept most, if not all, of the low ground separating the Ökur-mazar-tagh from the Mazar-t to the south-west, the comparatively large area now occupied by the lands of Char-bagh and adjacent villages was uncultivable and difficult for traffic until the Chinese reconquest in 1877. Consequently, before the gradual reclamation of that ground, the old line of the high road from Tumshuk, instead of skirting the southern extremity of the Okur-mazar-tagh, lay to the north of it through the gap of Arach (Map No. 8. B. I), which divides it from the equally rugged and barren hill chain of the Bél-tâgh.13 The more direct and far older route connecting Ak-su with Maral-bashi must have lain through this same gap, flanked by the remains of ancient watch stations, past the ruined sites of Chong-tim and Ldl-tâgh.

This comparatively modern diversion of the road deserves attention, because it may help to throw light on a physical change of wider geographical and antiquarian interest. I refer to the much-discussed question of the so-called desiccation' within historical times, in so far as it affects the Tarim basin. As I have recently had occasion to explain in some detail elsewhere, the apparent contradiction between the two main facts brought out by the available archaeological evidence on this question can best be reconciled by assuming that the volume of water brought down by the rivers into this great drainageless basin of innermost Asia has gradually diminished (probably through the gradual reduction of the ice reserves stored up since the last glacial period in the glaciers of the high mountain ranges feeding those rivers) ; while the climatic conditions which account for the extreme aridity prevailing in the basin itself have undergone no appreciable change during the two thousand years or so over which our historical and antiquarian data extend 14 In the absence of reliable direct records it may be difficult to determine to what extent this probable reduction in the volume of the summer floods which reach the deltaic area of the Kashgar-darya to the east of Maral-bashi has facilitated the extension of cultivation between the Mazâr-tagh and bkur-mazar-tagh, with corresponding progress in the drainage of previously boggy ground. But I think we may safely recognize here a modern illustration of the physical change that has rendered the belt of ground marked by the remains of Lal-tagh, Chong-tim, and neighbouring sites wholly waterless since Tang times, and has thereby caused the high road from Ak-su to be diverted to the present more southerly line.

A variety of topographical considerations support the belief that the tract in the vicinity of Maral-bashi must have always been favourable for the formation of a ` terminal oasis ' on the Kashgar river. I need only mention the advantages that irrigation would derive from the kind of natural barrage formed by the hill chains, which here stretch across the river's line of drainage, and from the comparatively close approach of the course of the Yàrkand-darya. This makes it possible, nowadays, for the irrigation of Maral-bashi to be supplemented to a very considerable extent by water from the Yarkand river. It is carried by the Zai canal, representing an old bed branching into the big lake-like reservoirs of Anar-köl and Kölde is Importance must have

Change connected with physical causes.

Advantages of position of Marälbàshi.

12 Cf. Serindia, iii. pp. 1309 sqq.

13 See ibid., iii. pp. 1311 sq.

14 See my paper Innermost Asia ', Geogr. J., 1925, pp.


487 sqq•

is See Maps Nos. 5. D. r, 2 ; 8. A. t ; Hedin, Reisen in

Z.-A., pp. 225 sq.