PHYTOGEOGRAPHY OF THE EASTERN 

 MOUNTAIN-FRONT IN COLORADO 



I. PHYSICAL GEOGRAPHY AND DISTRIBUTION 



OF VEGETATION 



CONTRIBUTIONS FROM THE HULL BOTANICAL LABORATORY 251 



(WITH SEVENTEEN FIGURES) 



ARTHUR G. VESTAL 



Reprinted for private circulation from 

 The Botanical Gazette, Vol. LXVOT, No. 3, September 1919 



