CLIMATE AND PLANT GEOWTH. 



29 



of the curves in the case of the oak-brush and. the aspen-fir types, and 

 (2) the decreased, range or flattening of the curve in tlie spruce-fir 

 type. 



It is not possible by a review of the monthly mean temperatures 

 to form a mental picture of the relative growing and nongrowing 



so 

 -f-s 



40 

 3J 



Uj 

 Q 



O 



6 /4 

 o 

 o 

 " /o 



s 



4cr 



i 



HHIi 



JUNE 



JULY 



AUG. 



SEPT. 



TYPE 

 n2 OAK- BRUSH 

 mk ASPEN - FIR 

 ^ 5RRUCE~E/ff 



Fig. 13. — Summation of temperatures above and below 40" F., 1916 



SUMMARY 

 (JULY— SEPT) 



temperatures ; that is, the temperatures above or below 40° F. These 

 are summarized in Table 9 and graphically represented in figure 13. 



Table 9. — Summary of temperatures above and below 40° F. 



Month. 



June. 

 July. 



August 



September. 



Total. 



Temperature segregations. 



/above. 

 I below . 

 /above. 

 Vbelow. 

 /above. 

 \below. 

 /above. 

 \below. 



/above. 

 \below. 



Oak-brush 



Aspen-fir 



type. 



type. 



"F 



"F. 



11,400 



9,347 



350 



767 



16,919 



13, 773 



15 



42 



14, 929 



10,357 







74 



10, 222 



6,838 



640 



1,034 



53, 470 



40,315 



1,005 



1,917 



Spruee-flr 

 type. 



'F. 

 5,090 

 1,399. 

 8,843 

 73 

 7,874 

 103 

 3,505 

 1,786 



25, 312 

 3,361 



