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68.	NOTES ON INDIVIDUAL MAP SHEETS		i:Chap. IV
	Yarkand, Camp 31 (at Chin!-bâgh, cire. 1 mile S. of City walls ;
	. C. 4).		38°	23'	45"
1906	-08. Yârkand, Camp 19 (at Chin!-bâgh as above,	outside   garden ;
	C. 4)		38°		49"
	Ighiz-yâr, Camp 12 (A. 3)   •		38°	40'	9"
	Bagh-jigda, Camp 21 (Dôgha Bag's house; C. 4)	...	38°	28'	17"

NOTES ON SHEET No. 6 (KARGHALIK, KILIAN)

   This sheet shows the mountainous areas   of 1906, this approximately assumed limit

   south of the Karghalik-Khotan road up to   of perpetual snow represents a sufficiently

   the valley of the uppermost Yarkand river.   close approach to the snow-line of 18,000

   Most of the ground was surveyed from routes   feet as shown on the map of Sir F. De

   followed in 1906 and 1908, the surveys   Filippi's expedition.

   being supplemented by work done in 1900   For brief descriptions of the routes

   on the main road to Khotan along the edge   followed by myself from Karghalik to Gnma

   of the Taklamakan, and in 1915 by that on   and from Karghalik to Kilian, see Ruins of

   the caravan route which leads from Kök-yâr   Khotan, pp. 167 sqq.; Desert Cathay, i. pp.

   up the Tiznaf river headwaters to the Yàr   142 sqq. As regards the early topography

   kand river valley and the Kara-koram pass.   of Karghalik and the hill tracts south, cf.

   For Karghalik and Kök-yâr astronomi   Ancient Khoian, i. pp. 89 sqq.; Serindia, i.

   cally observed latitudes were available, and   pp. 85 sqq.

   for the former place the longitude of 77° 26'   Apart from the large and fertile oasis

   30" was adopted as the mean of Colonel   of Karghalik, cultivation is limited in this

   Trotter's traverse value and that obtained   area to a series of small settlements, Kök-

   by Captain Deasy by chronometer; these   yâr, Yül-arik, Ushak-bashi, Kilian, all situ-

   differed only by 1' 51". The accepted posi   ated where the rivers from this part of the

   tions of Karghalik and Khotau, as well as   western K'un-lun debouch on a broad plateau

   the triangulated points in the adjoining   overlooking the desert plains. The' higher

   sheets Nos. 9 and 10, served as pivots for   valleys on the Tiznaf river headwaters and

   fitting the plane-table work. In addition   east of them afford sufficient summer grazing

   to other latitudes those observed on Sir F.   for large flocks of sheep owned at Kök-yâr,

   De Filippi's expedition were used for fixing   etc.

   the positions of R. B. Lai Singh's Camps   Corrections. C. 1. The grass symbols

   366, 370, 375, 377 along the Karghalik   N. of Besh-terek-langar ought to be in green.

Kara-koram route (C. 2-4, D. 4).   C.2. The symbol for astronomical lati-

   In the absence of any height determina   tude observation should be added against

   tions on the main range, the indication of   C. 26 Kosh-yüz-öghil.

   the snow-line in this sheet at an approximate   D.2. The area of 'low dunes with tama-

   elevation of 17,500 feet can only be consi   risks' should have been shown in yellow as

   dered as conjectural. Taking into account   `sandy tract with vegetation'.

   that the snowy portions of the main range   C,D. 2,3. Hill contours ought to have

   near the Karlik-dawan (D.3) were seen by   been interrupted where broken river courses

   Rai Ram Singh only in the early summer   mark valleys sketched from a distance.
Astronomically observed latitudes.

1900-01. Karghalik, Camp 33 (at Yetim-lukum, cire. 1 mile S.W. of

Bazar; C. 1)	37°	53'	32"
1906-08. Kök-yar, Camp 24 (Chavash Beg's house; C. 2)   ...	37°		1"
Kosh-yüz-öghil, Camp 26 (C. 2) ...	37°	3'	20"

NOTES ON SHEET No. 7 (AK-SU, UCH-TURFAN, KELPIN)

i

The surveys shown in this sheet extend roughly from the valleys of the feeders of the Ak-su river in the north to the riverine belt of the Yarkand-darya in the south.

'The routes from Ak-su along the foot of the main Tien-shan and from Uch-Turfàn due south to Kelpin and Tumshuk (B.2-4) were followed in the spring of 1908 and those