Oct. IS, 1914 



Water Requirement of Plants 



Table IV. — Summary of climatic conditions at Akron, Colo., in jgij 



1913- 



April. 



May. 



June. 



July. 



August . 



September. 



Days 

 (inclusive). 



I to 5 

 6 to 10 

 II to 15 

 16 to 20 

 21 to 25 

 26 to 30 



I to 5 



6 to 10 



II to 15 



16 to 20 



21 to 25 



26 to 31 



I to 5 



6 to 10 



II to 15 



16 to 20 

 21 to 25 



26 to 30 



I to 5 

 6 to 10 

 II to 15 

 16 to 20 

 21 to 25 

 26 to 31 



Air temperature ("F.). 



Average of— 



Means. 



49 

 33 

 45 

 S3 

 44 

 60 



47 

 54 

 55 

 55 

 62 

 69 



65 

 57 

 66 



71 

 69 



74 



78 

 74 

 73 

 76 



73 



75 



Maxi- 

 mums. 



66 

 46 

 64 

 69 



55 

 78 



58 

 68 

 69 

 70 

 77 

 86 



81 



67 

 81 

 88 

 86 

 91 



92 

 96 

 92 



83 

 78 

 87 



95 

 90 

 90 



93 

 90 



91 



90 



85 

 79 

 68 



59 

 60 



Mini- 

 mums. 



31 

 24 

 29 

 40 

 34 

 40 



35 

 43 

 43 

 42 

 46 

 51 



51 

 45 

 51 

 54 

 54 

 60 



56 

 60 



56 

 56 

 56 

 49 



61 

 59 

 59 

 61 



57 

 59 



56 

 53 

 45 

 39 



32 

 41 



Maxi- 

 mum. 



77 

 73 

 77 

 74 

 68 

 84 



69 

 81 

 80 

 80 

 84 

 91 



87 

 77 

 91 

 93 

 89 

 97 



i°3 

 93 

 87 

 93 



97 

 93 

 95 

 97 



92 

 92 

 86 



87 

 76 

 70 



Mini- 

 mum. 



21 

 10 

 18 



34 

 27 

 37 



31 

 41 



33 

 38 

 39 

 48 



48 

 37 

 42 

 52 

 52 

 49 



53 

 56 

 46 



53 

 S3 

 43 



57 

 54 

 56 

 56 

 53 

 54 



54 

 48 

 40 

 29 

 27 

 37 



Precipi- 

 tation. 



Inches. 



o. 02 



•94 



.87 

 •36 



Tr. 

 .82 



•54 

 Tr. 

 . 02 

 .06 



.26 

 Tr. 

 . 16 

 Tr. 



■ 51 

 • 42 



. 02 



I. 12 



.61 



. 10 



.05 



.24 



.04 



• 17 

 •45 

 . 10 

 Tr. 

 •39 

 •97 



Evapo- 

 ration. 



Inches. 



0.82 



.78 



•31 

 .76 



•51 

 ^•15 



.72 

 .84 



.86 



•93 



•99 



I. 50 



i^iS 

 1.07 



1. 17 

 1.27 



2. 19 



I. 71 



1.88 

 1.78 

 1.27 

 I. 01 

 I. 61 



1^75 

 I- 54 

 1-23 

 1.38 

 1.58 

 1.83 



1-37 



I. 27 



1.30 



.98 



.61 



■S' 



Wind 

 veloc- 

 ity 

 per 

 hour. 



Miles. 



7^4 



12.4 



3^6 



7.2 



II. o 



7-1 



6.7 

 8.9 



7^4 

 7.6 



5-7 

 5-6 



6.2 



103 

 9.0 

 6.6 



5-8 

 10.3 



5-8 

 6.2 

 4.9 

 5-0 

 5-9 

 5-9 



4.8 

 6.7 

 7.6 

 9.2 

 5-6 

 4-7 



The months of June, July, August, and September, 1913, were all 

 warmer than in 191 2, the average diflference in the monthly means being 

 4° F. In only 2 of the 24 five-day periods into which these months are 

 divided did the mean maximum temperature in 191 2 exceed that of 

 1 91 3. The character of the two seasons is best reflected, however, in 

 the evaporation graphs shown in figure i . The evaporation for the two 

 years was not essentially different up to the ist of June. From this 

 time on the evaporation in 1912 averaged much lower than in 1913. 



