314 



ENVIRONMENTAL CONDITIONS. 



Ste. Anne de Bellevue, Quebec (Macdonald College, fig. 9): The 

 highest weekly rate for this station was 181 c.c. (week ending June 

 29) and the lowest was 43 c.c. (week ending August 10). The last 3 

 weeks of July and the first 3 of August were characterized by low 

 evaporation intensity. Here the highest intensity recorded is much 

 lower than the lowest experienced at Tucson. Rainfall at Ste. Anne 

 de Bellevue was not great, but the rainy weeks were somewhat 

 regularly spaced. 



Fio. 7. — Weekly precipitation and evaporation indices, summer of 1908, St. Louis, Missouri. 



EvflfOltRTIO^f 



/?-»9 



216 



133 



//^r/^/^3 



/ss 



IB 



1.28 



.0-* 



.04- 



fH 



I.Z2 



3Z 



20T eoi 



132 



1.66 



jOO 



jBl 



I S3 



:72 



.oo 



2384^233 233 



161 



ISO 



£2 



A-1 



jOO 



KH/NyRLL 



J30 



/}0 



/SSt 



199 



.00 



36 



Mnria isJuva a IS te esiJUcre i3 io «>?u<ij lo n £■* iistn t m i/ zt 

 FiQ. 8. — Weekly precipitation and evaporation indices, summer of 1908, Oxford, Ohio. 



Orono, Maine (fig. 10): The minimum rate for Orono is 48 c.c. 

 (week ending June 1) and the maximum is 178 c.c. (week ending July 

 13). The week ending June 29 is without a record for evaporation. 



