CONTENTS 



Birds of a Washington City Dooryard. — Harry C. Oberholser i' 



Insect Migration in Floyd and Adjoining Counties of Iowa. — Carroll 



Land Fenton - - — 13 



My Favorite Song Bird. — Brother Alphonsus, C. S. C , -. 16 



The Missouri Muhlenbergias. — Benjamin Franklin Bush... 17, 33, 57^ 81 



Book Review. — J. Lunell -..- 29 



Panicum Lineare, Linn. — Oliver A. FarwelL 33 



^ r Sparrows. — Brother Alphonsus, C. S. C. 51 



xr Flycatchers. — Brother Alphonsus, C. S. C... 78 



irds Observed at Notre Dame, Indiana, in the Spring of 19 19. — Brother 



Alphonsus, C. S. C 98 



An All-Day Bird Trip at Washington, D. C. — Harry C. Oberholser 103 



Household Insects and their Remedies. — B. W. Scheib.... -,1 1 1 



Aquatic Life; With Special Reference to Entomostraca. — Joseph Slack 128 



Our Birds in November. — Brother Alphonsus, C. S. C 145 



Notes on Variation in Chicory. — N. M. Grier, Ph. D... 148 



Our Birds in December. — Brother Alphonsus, C. S. C 149 



Notes on Alabama Plants.— 14'". Wolf, O. S. B 151 



The Biological Significance of Selective Adsorption. — Jean Dujrenoy 159 



Sexual Dimorphism and Some of Its Correlations in the Shells of Certain 



Species of Najades. — N. M. Grier, Ph. D .-.- 165 



-airie Mirage. — Howard C. Brown 172 



•^rry Stage of the Upper Devonian. (Plate i.) — Carroll 



La ■' 'n 179 



A Consideii. ■■ "^^rtain Genera Proposed by Ehrhart. — Homer D. 



House _.200 



Birds Observed ai Notre Dame. Indiana, in the Fall of 191 9. — Brother 



Alpkor:^'>'y ^ '^ -' , 208 



