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THE BRYOLOGIST 
AN ILLUSTRATED BIMONTHLY 
DEVOTED TO 
NORTH AMERICAN MOSSES 
HEPATICS AND LICHENS 
Associate Editors 
GEORGE N. BEST, M.D. JOHN M. HOLZINGER, M.S. 
ALEXANDER W. EVANS, Ph.D. LINCOLN W. RIDDLE, Ph.D. 
and the 
Advisory Eoard Officers of the Society 
Pittsburgh, Pennsylvania 
1919 
