192 



HOBBS— ROLE OF GLACIAL ANTICYCLONE [April 24, 



glaciers of North America, which had the Keewatin, Labradorean 

 and Patrician nourishing centers that repeatedly waxed and waned 

 so as to reach their several maxima at different times (Fig. 2). 



Fig. 2. Map showing the known anticyclonic centers of the Pleistocene 

 continental glacier of North America. 



From the Antarctic region the experiences of Mawson strongly 

 indicate a near-by anticyclonic area probably located near the mag- 



