8 



UNIVERSITY OF MISSOURI STUDIES 



[156 



TABLE 



COMPILED BY DR. FRANCIS RAMALEY 



Summary of data on temperature and rainfall at Boulder, 

 Colorado, for eleven years, ending August, 1908. 



Highest recorded temperature is 97 degrees, July 15, 1902. 

 Lowest recorded temperature is 20 degrees, January 8, 1902, and 

 again February 20, 1905. 



Greatest rainfall recorded, 26.17 inches, 1906. 

 Smallest rainfall recorded, 13.67 inches, 1901. 



Ill ZONES OF VEGETATION* 



There are six great zones of vegetation about Boulder, 

 which, proceeding from east to west, are: A. The Zone of 



*These zones of vegetation are practically those of Robbins (Cli- 

 matology and Vegetation in Colorado, Bot. Gaz., 49, 256-280), who rec- 

 ognized (i) plains, (2) eastern lower foothills and mesas, (3) eastern 

 upper foothills, 6,000 to 8,000 feet, (4) montane zone, (5) subalpine 

 zone, (6) alpine zone. Professor Ramaley, however, would unite the 

 mesas and foothills into one zone (Univ. of Colo. Studies, 5, 50-51). 



