THE HEART OF THE ANTARCTIC 



bright tracts in the zenith were seen, which approached 

 the corona type of aurora, as figured by Peters. 



Movements of Aurora. — Is there any general direc- 

 tion in which aurorse move, or in which the shimmer or 

 kindhng passes along the curtains, &c.? Some notes bear- 

 ing on the question are available. 



Those auroree associated with clouds must travel 

 simply with the wind. Aurorse not connected with clouds 

 may have their motions determined by other causes. 



May 24. — An even arch appeared, trending from 

 north-west to south-east, about 30° above the south-west 

 horizon. The arch travelled towards the north-east till it 

 reached the zenith, and passed 20° beyond it. One end 

 now rested on Mount Erebus, when the motion ceased and 

 the arch faded. The motion was slow and intermittent. 



June 30. — A disjointed curtain over the summit of 

 Erebus travelled southward, and at length concentrated 

 in one reddish beam. 



June 4, 8.30 p.m. — An auroral glow appeared in the 

 west. A curtain grew east from it to Erebus. A vivid 

 green shimmer passed slowly along from west to east, and 

 faded just over Erebus. 



Earlier on the same day Professor David reported an 

 arch trending from north to south, and a shimmer passing 

 along it from north to south. 



August 26, 6.15 P.M. — A typical curtain low down over 

 Erebus, its ends bearing north-east and south-east. Waves 

 of brighter light passed along it from north to south. 



TIDES AND CURRENTS 



By JAMES MURRAY 



The coast-line, always encumbered by the ice-foot, 

 would render littoral tide observations in Antarctica 

 difficult or impossible. Fortunately the fast ice, filling all 



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