359 
Survey of Northeast Greenland. 
The difference is here nearly 19’, which even at a rough and 
ready azimuth observation, under unfavourable conditions, would be 
an extremely grave error. 
In this manner the last doubt as regards en VI is removed. 
Sketching survey at Station XXIV. 
Determination of altitude of telescope. 
Cairn XV Cairn VIII Cairn VI 
Е О», 252.9 393.2 970 
EN SDS + 696.0 — 602.0 = 185 
Refraction & curvature | . 80.1 + 121.6 = "700 
of the earth RE ; g 
BLE BER 868.8 m 873.6 m 881 m 
As a mean we get the altitude of the telescope 875 m. 
The sketching survey from Station XXIV comprises 132 points. 
Below 1 will give an extract from Bisrrup’s observations as 
regards the sketching survey, as well as of my computation. To 
understand the designations of the table it must be borne in mind 
that the map is drawn to Mercator’s cylindrical projection, that for 
the loxodromic azimuth I have used the convenient, but less correct 
designation “course”, and also that by v I wish to designate the 
angle of depression. 
Extract 
Station XXIV, Teufelkap, 31/V 1908. Н = 875m. 
Hori- Å Di- ; 
No. | Point zontal | NET. Azimuth | Course | tanv stance | EEE 
| Е circle | km | m 
Meridian point of the circle. | 130°43’.0 | 
16 | Store Koldewey, coast ..... 47 10 | 91°33’.0 | 83933’ | + 83°.0 | + 0.0272 | 35.0 
382 Кар: Peschel, coast.......... 101 26 | 92 33.0 |--29 17 | = 29.1 | +0.0447| 20.2 
и м 101 05 |983 18.5 |--29 38 | + 29.4 | +0.0579| 15.4 | 
40 | Coast west of Kap Peschel.. | 106 57 ‚98 03.0 || +- 23 46 | + 23.6 |- 0.0548 | 16.7 
41 | Coast west of Kap Peschel.. |106 58 98 15.5 |--23 50 | + 23.7 | + 0.0570 | 15.6 | 
AAR ES KELLY ASE ee о. 112 27 |93 38.0 |—18 16 | 18.2 |+00632| 14.1 | 
ERR Goastrat glacier 22... 52 131 50 |92 580 |+ 1 07 | 11 |+0.0518| 172 
ОЕ at glaciers "00. 133 55. |92 50.0 |+ 3 12 |+ 32 |+0.0495| 18.1 | 
54 | Eastern point of Orgelpiberne | 142 39 |90 41.5 | + 11 56 | + 11.9 | + 0.0122) 11.9 | 739 
55 | Peak К, also pointed from XIX | 160 55 | 89 44.0 | + 30 12 | + 30.0 |-—0.0045| 21.1 | 995 
58 | Peak No.3a from XX ,..... 194 57 |89 48.5 | + 64 14 | + 63.5 | + 0.0032 'e.51 | 1200 
64 | Peak west ofSoranerbræ, No.8 | | 
I A Sue |216 36 |89 58.5 | + 85 53 | + 85.1 | --0.0003 | 39.3 984 
The meridian point of the circle which by means of an obser- 
vation of the sun was determined at 130°44’.7 is in the table given as 
130°43’.0; the correction is due to the result of the geodesically com- 
puted azimuth. 
