322 INDEX. 



Cloud(s) : amount 149 ; annual variation of, 152 ; daily variation of, 155 ; during blizzards, 148 ; 



height of, 132; kind of, 147; motion of, 132 ; radiation and, 154; wind and, 151, 

 Cloud and precipitation : chapter IV, 147. 

 Cold surface layer of air : effect of, on maximum and minimum temperatures, 76 ; formation 



of, 43 ; gustiness and, 121 ; non-periodic changes of temperature and, 76 ; removal of, 45, 50 ; 



sudden commencement of blizzards and, 238 ; wind and, 100, 125. 

 CoNVEXiON CURRENTS : clouds and, 149 ; vertical temperature gradient and, 43 ; wind velocity 



and, 100. 

 Corner Camp: position of, 6; wind vane at, 112. 

 Crowther, Miss E., iii. 

 Crowther, W., iii. 

 Cyclones : at Cape Adare, 239 ; at the Gauss Station, 241-247 ; over the Southern Ocean, 206- 



209, 245, 246. 



David, T. W. E. : joiirney to the south magnetic pole, 1. 141, 142. 



Day, B. C. : observations taken by, 0. 



Derbyshire fund, iii. 



Dines, W. H. : iv ; discussion of temperature observations taken on the Discovery Expedition, 



21, 89 ; hydrogen generator and balloon instruments, 270. 

 Drift snow : general description of, 12 ; during blizzards, 148 ; frequency of, 161. 



E 



Elster and Geitel : unit of atmospheric radio-activity, 320. 



Erebus, Mount : features of, 6. 



Erebus smoke : motion of, 131. 



Evans, E. R. G. R. : observations taken by, 9, 26 ; voyage in the Ross Sea, 2. 



FiLCHNER, W. : exploration in the Weddel Sea, 93. 

 Fog : 147 ; cause of, on the Barrier, 268. 

 Fog bows, 9. 



FoHN AND blizzards, 51, 251. 



Fram type op daily temperature variation : Meinardus's explanation of, 62 ; Mohu's explana- 

 tion of, 60. 

 Framheim : description of the station at, 7 ; history of the station at, 10. 



G 



Gauss Station : position of, 242 ; pressure, winds and weather at, 242-247. 



General air circulation over the Antarctic : chapter VII, 248 ; Hobbs' theory of, 248 ; 



Meinardus's theory of, 252 ; Hobbs' and Meinardus's theories compared, 256 ; theoretical dis 



cussion of, 257-268. 

 Gold, E. : barometric gradient and wind, 242. 

 Gran, T. : vi ; meteorological work, 8. 



Greely, a. W. : daily variation of pressure in the Arctic, 181. 



Gustiness : definition of, 115 ; annual variation of, 119 ; cause of, 121 ; temperature and, 123. 

 Gutta Percha Company, iii. 



H 



Hann, J.: land and sea climates, 86; temperature observations at Cape Royds, 79; vertical tem- 

 perature gradient, 38. 

 Height of the Barrier and South Polar Plateau : chapter IX, 286. 



