190 HOBBS— ROLE OF GLACIAL ANTICYCLONE [April 24, 



6°. The evolution of the Antarctic blizzard and its termination. 



7°. Areas of relative calm corresponding to the flat central 

 bosses of the ice domes. 



8°. Air highly charged with moisture within the flat central area 

 of calms, and precipitation of snow or ice near the glacier surface. 



Confirmation in Later Exploration. — In the three years which 

 have elapsed since the appearance of my " Characteristics of Ex- 

 isting Glaciers," important new explorations have been carried out; 

 the inland-ice of Antarctica has been twice penetrated to the south- 

 ern geographic pole and new areas have been explored; several 

 crossings of Greenland have been made along new routes ; and full 

 reports upon some earlier explorations have become available. It 

 is proposed, therefore, to review the evidence and show how this 

 has been enlarged by the recent observations ; as well as to add 

 evidence along hitherto undeveloped directions. Such a discussion 

 of the evidence seems to be called for at the present time, since in 

 a paper recently read before the Royal Meteorological Society, 

 Brooks has presented this theory as his own, merely citing my book 

 for references to glacial conditions.* 



Evidence for More than One Anticyclonic Center Above 

 Each of the Greater Areas of Inland-Ice. 



Greenland. — The three transections of the Greenland continent 

 which have now been made within the central and southern por- 

 tions, have revealed the fact that there are at least two higher plains 

 upon the snow-ice surface which are separated by a depression. 

 This depression clearly lies to the northward of de Ouervain's route, 

 since his summit level is considerably lower than that of either 

 Nansen or Koch and Wegener, though like Nansen's, his highest 

 point is found near the east coast. The southern of the two nour- 

 ishing centers of the Greenland ice-sheet is thus located toward the 

 east coast and south of the Arctic circle, whereas the other center 

 lies toward the west coast from the medial line of the continent, 



* Charles B. Brooks, " The Meteorological Conditions of an Ice Sheet 

 and their Bearing on the Desiccation of the Globe," Quart. Jour. Roy. 

 Meteorol. Soc, Vol. 40, 1914, pp. 53-70. 



