VOL) VILE. JANUARY, 1923 NO. 7 
anerican MEIDLAND 
NATURALIST 
a aaa 
Devoted to Natural History, Primarily 
that of the Prairie States 
= 
ae 
Published by the University of Notre Dame, 
» Notre Dame, Indiana 
J. A. NIEUWLAND, C.S.C., Ph. D., Sc. D., Editor 
Botany. 
ASSOCIATE EDITORS 
CARROLL LANE FENTON, N. M. GRIER, 
University of Michigan, — . Wash. and Jeff. College, 
Geology ; — Zodlogy 
CONTENTS 
Evidences of a Differential Death Rate of the Sexes Among 
Animals. S. W. Geiser, Ph. D. 153 
An Amateur Wild Flower Bed. O. A. Stevens 164 
Birds of Watertown, Wisconsin. Brother Alphonsus, C.S.C. 172 
PRICE $1.50 A YEAR SINGLE NUMBERS 30 CENTS 
FOREIGN, 6s. 6d. 
Entered as second-class matter at Notre Dame, Indiana. Acceptance for mailing at special 
rate of postage provided for in section 1103, Act of October 3, 1917, 
authorized on July 3, 1918. 
THE UNIVERSITY PRESS, NOTRE DAME, INDIANA 
