4 
VOL: VLE MARCH- MAY, 1923 NOS. 8-9 
AMERICAN MID LAN D 
NATURALIST 
Devoted to Natural History, Primarily 
that of the Prairie States 
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 Zo0logy— 
Aaysollan Insti, 
— ANS / 
‘ (Sy 
CONTENTS 1 9 
Ww i IGZ9 
fa a MS. ° /y : e ° sty 
Notes Relative to the Species of Gambusia in United \)® , 
States. S. W. Geiser, Ph. D. 175 
The Birds of Floyd County, Iowa Carroll Lane Fenton 189 
The First Robin Brother Alphonsus, C. S. C. 209 
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 
