1923%20Memoir%20on%20Maps%20of%20Chinese%20Turkistan%20by%20Stein%20s

NOTES ON INDIVIDUAI, MAP SHEETS
NOTNS ON SlII3E'l' No. 1 (TURU(:-.lRT-DAIVAN)
The survey of the small area comprised
in tile S. E. corner of this sheet was made
by H. B. T i1 Sing11 in 1!)07. Owing to the
damage his theodolite l~ad sr~lfered on t.he
way f ronl .\It-su, 1111 lati tudc observations of
Iris were available for this area. I-Iis route
from Kashgar to the Turug-art-da\v;n (Sheet
No. 1. C. 3) on tl~e Russian frontier lying
almost due nortli, it nas considered advisal~le
to accept for the 1)osition of tl~e latter the
coordinates obtained from the latest Russian
surveys and to adjust t,he dvtails s11o1i.11 in
this sheet on tl~at, point ancl on the accepted
posit,ion of 1i;ishgar (we Lclo\v Sotcs UII
Shect KO. 9). Tl~c 1robitio11 or' tlre 'I'uvu;.-
art pass 011 the sr~rvejor's plane-table, afi
indicate11 1)y Sheet No. 1 of the I'JOti-08
Map, lies about 4 rninrrtes of lat. to the
iouth and circ. 4. minutes of long. to tlre west
of tl~nt. shr~wt~ 1)y tl~r Ilttesian map.
The fact that tl~e 'l'~~rug-art-da\\.dn is
reaclred Erum ICSsl~gar by a road \vt~icl~ slro1.tly
before 1007 had been made practicable
for countrs cttrts at the instar~ce of the
Rr~ssian ar~thoritics, suflicie~~tly indicates fl~e
con~pari~ti\.ely c,asy c11ar:xcter of the ground
over wl~icl~ tl~is route alonx the Cl~alimak
valley Ic~a(ls 111) to tl~e 'll'ien-shan water-
>Ilc.cl.
NOTES ON SliEIS'll No. 2 (K;lSliG.lH, JI UZ-T~~GII-.~'l',i)
The area sho\vn Ly this sheet comprises
a considerable portion of the great xneri-
dional range connecting the westernmost
K'uo-lull with the T'ien-shan in the north
and forming the eastern rim of the Pitnir
region. In it appears also the estreme
north-western corner of the Tiritn basin
proper, occupied by the large oasis of Kish-
gar and the much snlaller ones of opal and
T~sh-malik.
The routes surveyed on the first journey
led along the western slopes of the meridion-
a1 range, usually Itnown after its most
pominent peak as that of Muz-tsgh-ata,
as far as the great defile of Gez-dara (C.3)
and then through this to Tish-malik and
Kishgar. The surveys of 1906-08 falling
within this sheet were confined to the ground
in its sooth-eastern and north-eastern corners.
Those of 1913-13 \\.ere of greater estent and
mere carried not only throng11 the nlsin
valleys receiving the drainage from the east-
ern flanks of the Mnz-tigh-ati massif, but
also along both sides of the nort,hern portion
of the range, where it approaches the T'ien-
shan and gives rise lo the main feeders of
the Kishgar river.
For the delineation of the Muz-tirgh-atti
range, between the approximate latitudes
of 38' and 3g0, and of the great valleys
which flank its western slopes, a considerable
number of triangulated points were available.
These were derived maiuly from the triangu-
lation work of 1900, analjzed in sections B,
C of Major Mason's Appendix A. In ad-
dition, certain points on the main range fixed
by the operations of the PBmir Boundary
Commission and Captain Deasy could also
be utilized. The extension of It. S. Rim
Singh's triangulat.ion to Tdsh-malilc (D.2)
permitted the course of the Gez-dara, or
valley of the Yanl8n-yir river, to be acctl-
rately shown on the map right down to
where it debouches into the great plain of
the Tirim basin.
Besides the triaugulation results just
referred to, the position accepted for the
'old totvn' of Kishgar and those for I'ir-
Itand nnd certain other places in the adjoin-
ing sheets Nos. 1, 3, 5 were used for the
adjustment of the plaue-table surveys em-
bodied in this sheet. The value assigned to
Kishgar, Int. 39O 28' 4SN, long. 75' 58',
is that hitherto adopted by the Survey of
India fro111 the mean of numerous observ-
ations by successive expeditions. It deserv-
es, however, to be noted that the longitude
value which wireless observation on Sir F.
De Filippi's expedition fornished for a point
close to Chini-bigh, the British Conarllate