GLACIOLOGY OF THE SOUTH ORKNEYS. 863 



(18) NoRDBNSKJOLD, 0., " Note sur la glaciation antarctique," La Geographie, ix. 1, Jan. 1904. 



(19) GOURDON, E, I.e., p. 71. 



(20) Chamberlin, T. C, Jour, of Geol., 1895, vol. iii. p. 677. 



(21) VON Drygalski, E., " Grronland Expedition." 



(22) See Hobbs, I.e., chap, i., with reference to Willard Johnston's observations of ice action in cirques. 



(23) GouRDON, E., I.e., p. 123. 



(24) I.e., p. 139. 



EXPLANATION OF PLATES. 



Plate 



1. 



n 



n. A. 



5' 



II. B. 



n 



III. 



» 



IV. Fi 



Outline mtip of Laurie Island. 



Curves showing glacier temperatures at various depths. 



J> J! 1) )) )) 



North-east side of Scotia Bay from about centre of west coast of the Bay, showing 

 characteristic " ice-foot glaciers " with cliff terminations. 

 IV. Fig. 1. Hill-top covered partly by snow, partly by ice ; with ice-fall on to more level portion of 

 ice-sheet below. 

 „ 2. Tiny cliff "glacierette." 

 V. ,, 1. Half-Moon Glacier, west side of Scotia Bay, showing whole length of glacier. Note 

 horizontal stratification and snout termination with small moraine to the right. 

 „ 2. Half-Moon Glacier — nearer view of south end. Note folding of ice layers. Ice-foot 

 and tide-crack in the foreground. 

 VI. „ 1. Snout termination of glacier on The Beach as seen from Uruguay Cove in winter. 



,, 2. Summer aspect of terminal ice-clifi in Uruguay Cove. Photo taken at low tide. 

 VII. ,, 1. Allan Glacier occupying deep cirque below the ice-capped Mount Ramsay. 



,, 2. Northern half of the termination of Allan Glacier with ice-cave. Stratification following 

 sinuosities of underlying rock. 

 VIII. ,, 1. Small termino-lateral moraine near Point Thomson. Note also surface snow layers over- 

 hanging ice strata below, which are somewhat concave. 

 ,, 2. Large moraine with terraces of retreat, south-west corner of Scotia Bay. Scotia Bay ice- 

 sheet in background. 

 IX. ,,1. Cliff glacier on southern face of eastern peak of Saddle Island. 



,, 2. Steep valley glacier coming down near Cape Bennett at north end of Lewthwaite Strait, 

 Coronation Island, apparently from "inland ice "in the interior. 

 X. ,, 1. Ice-foot on The Beach just after the break-up of the floe in Scotia Bay. 



,, 2. Rocks off shore at Cape Geddes, showing rounding and polishing by floating ice. 

 XL Panoramic view of Brown's Bay, north coast of Laurie Island, taken from Point Thomson. 



TRANS. ROY. SOC. EDIN., VOL. XLIX., PART IV. (NO. 15). 117 



