RROCBBDINQS 



OF THS 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. IX, No. 2, pp. yj-(il June 16, 1919 



II 



Life -Zone Indicators in California 



BY 



Harvey Monroe Hall 



Associate Professor of Botany, University of California 



AND 



Joseph Grinnell 



Director of the Museum of Vertebrate Zoology, University of California 



PRINTED FROM THE 

 JOHN W. HENDRIE PUBLICATION ENDOWMENT 



SAN FRANCISCO 

 Published by the Academy 



1919 



