6-4 



THE RUSTS OF GEAIXS IN THE UNITED STATES. 



Table VII. — Temperature record showing the average monthly departure (in degrees 

 Fahrenheit) from normal in several States in 1903, 1904, and 1905 — Continued. 



1905. 



Month. 



Tpths 0kla - Kan - Mi? " 

 noma. sas. souri. 



Xe- South 

 bras- Iowa. Da- 

 ka. kota. 



*£ h Min- Wi* 

 kota. °esota. consin. 



Aver- 

 age. 





+ 0.9 

 - .3 







I 







- 2.5 -3. S - 3.fi 



:::::::::::::::::::: 









— .7 — .5 —1-3 4- .3 



H-0. 9 + 0. 5 











January 



-3.5 

 -10 

 + 3.5 

 _ 2 



-7.8 

 -10.4 

 + 5.5 

 — 22 

 + .2 



-S.2 

 -8.8 

 +8.5 

 -1.5 

 -1.1 



-7.5 

 -8.6 

 + 7.8 

 - .1 



+ .1 



—5.7 — 7 

 -6.8 - 6.8 

 +8.2 1+ 9.1 

 -2.9 — 1-8 



-5.8 

 -2.9 



+10.7 

 -1.7 

 -4.4 

 — 2.3 



-5.3 



- 1.4 

 +14.5 



- 1 

 -2.8 



- 3.5 



- 2.7 



- 2.2 



- .31 



- 9 



- 3 



- 2. 7 



-5.5 



- 1.9 

 + 7.4 



-1.7 

 -3.5 



- 1.8 

 -2.3 



-9.3 



- 1.32 



-7.6 



- 2.53 



-2.3 



- 6.8 



- 5 

 + 4.2 



- 1.8 



- 2.9 

 -1.2 



- 2.1 



-15.6 



- 2.22 



-6.2 



- 2.06 



-2.1 









\pril . 





Mar. . 



-3.4 

 — .5 



- 2.1 



— .3 











Julr 













-« 



- 9.9 



-1.42 



-10.2 

 -3.4 



-3.5 





Departure from normal: 



Accumulative 



Average monthly 



Of 3 crop months- 

 Accumulative 



Average monthly. 



Of month containing 



critical period 



-11. 5 

 -1.64 



- S.5 



- 2. S3 



_ 2 



-12.7 

 - 1.81 



+ 3.50 

 + 1.16 



+ .20 



-S.6 

 -1.22 



+5.90 

 +1.96 



-1.1 



-4.4 

 - .62 



+ 7.8 

 + 2.60 



+ .10 



-9.20 

 -1.31 



-6.80 

 -2.26 



- .50 



- 8.40 

 -1.20 



-4.20 

 -1.40 



- .30 



-9.18 

 -1.31 



-3.53 



-1.17 



-1.42 



The temperature records (Table YII) for this region for the 

 7-month period preceding harvest and the 'plotted monthly mean 

 departure from normal (fig. 2) show that in 1903 the average monthly 

 temperature for the 7-month period varied less than one-half a degree 

 F. from normal in all States except Missouri and Wisconsin, where 

 temperatures were high, and in Nebraska, where temperatures were 

 low, the average for the whole region being 0.12 degree F. above 

 normal {K). In 1904 temperatures were subnormal in all States 

 except Texas, Oklahoma, and Nebraska, and strikingly so in Iowa, 

 North Dakota. South Dakota, Minnesota,, and Wisconsin, the average 

 for the region being 1.23 degrees below normal (L). In 1905 tem- 

 peratures were again generally subnormal, but not to such an extent 

 over the five last-named States as in 1904, although the general 

 average below normal was slightly greater in 1905 than hi 1904 (21). 

 In considering the 3-month period before and dining the heading of 

 the grain it is seen that in 1903 the average monthly temperatures 

 were subnormal, with the exception of Kansas, Missouri, and Xorth 

 Dakota, averaging 0.73 degree F. below normal (X); that these 

 temperatures were more subnormal in 1904 than in 1903, with the 

 exception of Texas and Oklahoma, averaging 1.03 degrees below 

 normal (O): that they were again subnormal in 1905, but more 

 irregularly so than in 1904, with a general average slightly greater 

 than that of 1904 (P). In considering the month embracing the 

 critical period it is seen that temperatures were subnormal with 

 striking regularity over the entire region in 1904, averaging over 2h 

 degrees below normal hi Xebraska and Iowa, almost Sh degrees in 

 Wisconsin, and over 3^ degrees in South Dakota. Xorth Dakota, and 

 Minnesota, with a general average of 2.67 degrees below normal (i?). 



216 



