General Notes 



201 



powers of change and adaptation. They are true avian progres- 

 sives. Manley B. Townsend. 



COMPARATIVE MID-WINTER TEMPERATURES. 



The diagram shown herewith has been compiled by the U. S. 

 Weather Bureau and represents the average morning tempera- 



r: ot-:<-< 



siCiH)-, 



<3: 



