Southern Tibet : vol.4 / 746 ページ（カラー画像）

0746	Southern Tibet : vol.4
南チベット : vol.4

4 2 6

SOME REMARKS TO THE HEIGHTS AND DISTANCES.

Page I I o line 6 from the top Kelyang stands for Kebyang

» 110 » 2 » » bottom 5,15 I » )) 5,094

» 120 » 5 » » » 4,169 » » 4,069

» 122 » 3 » » top Totlung » » Tolling

)) I 2 2 » 2 )) )) bottom Sarjer » » Sasser

E. THE MAP IN 1 : 200,000.

In 1918 Professor KARL D. P. ROSÉN published a scientific critical examination

of the reliability and accuracy of my Tibetan panoramas, reproduced in a reduced

scale in the Atlas of Panoramas.' He compared my sketches with the photographic

panoramas made from the same points as some of them, and arrived at the con-

clusion that the exactitude was so great that it would be a pity not to make all

possible use of the sketches. Only to a very small extent was this done by Lieutenant

KJELLSTRÖM when he constructed the map, in i : 300,000.

Professor Rosén therefore advised me to have a new and chiefly hypsometrical

map drawn where all the material of the map in i : 300,000 should be worked out

more in detail from the morphological data contained in my panoramas, and the

mountains should be sketched with approximate isohypses or »Gefühlsisohypsen» as

the German term runs.

The new map which forms a separate atlas to this work, was to be drawn

by Colonel H. BYSTRÖM. To keep the expenses within reasonable bounds we decided

to make the map only in black, brown, blue and red. The range of sight of

every panorama was to be marked in the map. To make it possible for students

directly to compare this map with the map of my journey in 1899-1902 published

in the atlas of my Scientific Results, we found it appropriate to have the new map

reproduced in the same scale as the first one, or in 1: 200,000. The larger scale

also had the advantage of affording more space for morphological details. In cases

where discrepancies existed between the absolute altitudes as given in the text and

on the map in i : 300,000, all necessary corrections should be made, and the altitudes

regarded as definitive.

Finally it was decided not to force my route into the net of co-ordinates, but

to construct the map entirely upon the basis of my original field-maps. Also in this

respect it would be quite equal to my map of 1899-1902, and with regard to

accuracy both maps could be directly compared with one another.

I have said above, p. 203, that the length of my route from Tankse through

Tibet and back to Tankse was, in my fieldbooks, found to be 4,27o km. in length.

If the field survey had been correct, the polygon would have been closed at Tankse.

I Vicie Ymer, 1918, p. 1 2 5 et seq.

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