THE UNIVERSITY OF TORONTOANDTHE ROYAL ASTRONOMICAL SOCIETY OF CANADA
YOU ARE INVITED TO ATTEND A LECTURE ON TUESDAY.DECEMBER 2. AT 8 P.M. IN ROOM 43. PHYSICS BUILDING.
By LOUIS A. BAUER, PH.D.DIRECTOR OF THE DEPARTMENT OF TERRESTRIAL MAGNETISM OFTHE CARNEGIE INSTITUTION OF WASHINGTON, D.C.
