Survey of Northeast Greenland. 357 
The heights of the cairns XV, XVIII and VI are 252.9 m, 393.2 m and 
970 m respectively. j 
(For explanation of the computation table see p. 223). 
FO een eue 100°59'04”  logtan u....... 9.98263 AE RR RÅ 43951'17” 
И Ne ee 48 22 58 — tan (45° + и) 8.30085 45° =u. 1 08 43 
а+в + у--0... 149 2202 — tan 15 (р-- 9) 0.56243n !a(p+g) 105 1859 
1. (а В--у-д) 74 4101 — 12115 (р 9) 8.86328n ‘e(p+q)+ 4 1029 
ЕЕ 105 18 59 P.. 101°08'30” 
q.… 109 2928 
log sinus 105 side 
о. 55°18’25” 9.91455 4 56659 
[DED Se. =o oh Oe 101 08 30 9.99174 4.64378 
GL. SEE 23 3805 9.60304 4.25508 log(a:sin a) 4.65204 
PACE ET. 45 45 39 9.85518 4.52459 
Е ee 109 29 28 9.97437 4.64378 
LETTRES LE 24 4453 9.62183 4.29124 log (b: sin /) 4.66941 
1. control of the computation: 7 + д = 101°59'04". 
2. control of the computation: log tan и = log sin 4 + log sin p= 9.98263. 
AAN __ ¢ 4.6437 
3. control of the computation: log m — \ 4.64378" 
Computation of geographical co-ordinates. As mentioned 
in the preceding Bıstrup in the course of the station pointing sighted 
two points lying near one another, the angular distance of which, 
seen from Teufelkap, was only about 5’. Cairn VI stands on a low, 
dome-like hill, which only rises very little above the immediate sur- 
roundings. Quite a similar hill of the same altitude is found im- 
mediately south of the cairn. It must, therefore, a priori be supposed 
that the most northerly of the two sighted points was the right one; 
from Bistrup’s note in the observation journal, however, just the 
opposite had to be inferred. The applying of a control to the ob- 
servation was consequently most desirable. This can be obtained through 
the computation of the geographical co-ordinates of Station XXIV, in 
that one gets, in this manner, a value of the azimuth XXIV—VI, 
which can be compared with the result of the azimuth observation 
by the sun, performed at Station XXIV. 
The explanation of the designations used in the computation 
table below is to be found on p. 234. 
The computation has been performed from Station VI. For this 
point are given (see pp. 236 and 232): 
ф = 76°29'45".6, 1 = 19°05'22”.1, Azimuth VI—VIII = 178°36’07” 
log (VI—XXIV) — loge — log K — 4.52459 AS BEE or eee — 109 2928 
Hence Azimuth VI-XXIV — z — 69°06’39” 
