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. 



Month 



January. . 

 February. 

 March . . . ■ 



April 



May . . . 

 June 



July 



August. . . 

 September 

 October. . . 

 November. 

 December. 



Annual. . 



E d. 

 o E 



34-1 

 32-9 

 39-4 

 47-7 

 56.4 

 64.6 

 70. 1 

 71 .0 

 64.0 

 530 

 430 

 370 

 51.0 



Warmest 

 mean on 

 record. 



Year Degs 



1906 

 1907 

 1907 



1902 

 1901 

 189b 

 1897 

 1900 

 1904 

 1906 



Coldest 



mean on 



record . 



Year 



1905 

 1899 

 1906 

 1900 

 1907 

 1907 

 1906 

 1906 

 1900 



1905 

 1S98 



Degs 



Greatest 



rainfall on 



record. 



Year Inc's 



0.4 



0.66 



1.6 



3-.S8 



3.02 



1-53 

 1.72 



1-3 



I • 55 

 5|i-47 

 10.59 

 00.68 



1903 

 1899 

 1900 

 1904 

 1897 

 1906 

 1897 

 1902 

 1903 

 1906 

 1902 



Least rainfall 

 on record. 



0.87 



I 5 



2.79 



9. iS 



5-35 



3-71 



3.81 



3-3 



2.7 



3-43 

 1.87 

 0.54 



Year 



1903 



1908 



1908 



1 90S 



1899 



1908 



1901 

 1900&1905 



1901 



1900 

 1899&1901 

 1 905 & 1 906 



Inc's 



0.08 

 0.09 

 0.23 

 I. 71 



0'55 

 0.29 

 0.46 

 0.22 

 o. 10 

 0.13 

 0.00 

 0.00 



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, 6, 50-51). 



