312 Appendix. 
interval of time being rather irregular. In order to give an idea 
of a disturbance, the following is an extract from the Magnetic 
Journal :— 
November 29th, 1899 :—“ Impossible to take set of magnetic 
observations, on account of the extraordinary disturbed state of the 
magnets. Vibration magnet drawn as much as 20 and 30 on each 
side of the central division, and the whole scale would disappear 
from the field of view. At, 4.10 Р.м. the circle reading for 
declination was 157° 44’ 50". At 4.17 it was 156° 32’ 30”, the 
magnet being in the same position (erect), for both readings. ‘Thus 
there is a difference of 1° 12’ 20", in the declination for an interval 
of seven minutes. The utter impossibility of taking observations 
under such conditions is obvious.” 
Table X. gives magnetic dips at eight geographical positions :— 
Date | Latitude. | Longitude. Dip. Remarks. 
Jan. 2nd, 1899 | 63° 41’ S.| 160° 16’ E. = 83° 18-53’ b in the ice 
pack. 
Jan. зга, 1899 | 63° до’ 169 eo. ое cum Ditto. 
March, 1899, to | 71? 18' 170° 9' |—86° 34°13’ | Mean of до (Cape 
Feb., 1900. Adare). 
Jel, Alm, по) | 735 m^ 168? 31! |—87° 18:28' | 14 miles due W. of 
Coulman Is. 
Feb. 6th, 1900 | 74? 23/ 164° 3 .[-88? 1°31 | Taken at foot of 9 
Mt. Melbourne. 
IMEI, eth, noo 75° n 163° 32- | — 37247 | еам оа. ice 
| barrier. 
Кер; Sth ШОО | 75 2l 163° 29° |— 87° 34°51’ Ditto. 
Feb. oth, 1900 | 76° 12’ 168° 20 |—86° 52°13’ | On Franklin Is., 
W. side. 
a M саллы же Жыл шо n 
Sir James Clark Ross, in 1841, observed a dip of —88° 24' some 
twelve miles to the north of Franklin Island, so that the decrease 
in fifty-nine years amounts to 1° 32', or an annual decrease of 1°66’, 
There is very little doubt that the magnetic pole is much further 
N. and W. than in 1841 ; but, of course, it is impossible to accurately 
locate its position from such seanty data. 
THE AURORA AUSTRALIS, OR POLARIS. 
The Aurora, as is well known, is a phenomenon at the same time 
cosmic and terrestrial, which on the one hand is confined within the 
atmosphere of our globe and stands in close connection with 
