Fig. 8. lleau temperature diagrams for the year. A. Mammoth 

 Hot Springs, Yellowstoue Park, altitude 0200 feet. B, Anarouda. 

 altitude, 5.300 feet. C. Philipsburg, altitude. ;"2T.'> feet. D. Ovaudo. 

 altitude, 4101 feet. E, Missoula, altitude, :\2V2 feet. F, Tro.v, altitude. 

 isso feet. The figures at the right represent the ratios of the growing 

 to non-growing seasons. The mean temperatures for the months are 

 on the curves midwa.v between the vertical lines. 



48 



