8 Russell R. Spafford 
Data ENTERING INTO A SCALE oF Stupy Across SOUTHERN NEBRASKA 
County Dundy | Red Willow) Franklin Jefferson | Richardson 
Raintall)s cyan 18 in. 2 in. 26 in. 29 in. 32 in. 
Growing season.......... r4o d. 50 Gly |) BSS Gl 165 d. 165 d. 
Harmvarearssiy sn eitrcerects 640 a. 353 a. 235 a. 189 a. 158 a. 
CroplarearcaiGancmwn rane: 200 a. 200 a. 193 a. 155 a. 136 a. 
Total farm capital........ $11,974 | $12,708 | $13.404 | $15,663 | $16,092 
Man labor per farm....... 1.6 1.6 1.6 THO} I.6 
coarser and more open soils in the western counties. With im- 
portant variations in soil practically eliminated, climate in this 
scale becomes the effective factor. Growing season along our 
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JEFFERSON RICHARDSON 
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DUNDY COUNTY TYPE OF FARN RED WILLOW Co. FRANKLIN JEFFERSON RICHARDSON 
Fic. 10. The organization of southern Nebraska farms. See Fig. 9. 
(Labor income is a measure of the profitableness of a farm business. It 
is determined by subtracting farm expenses and a fair rate of interest on 
capital from the farm receipts.) 
southern boundary varies from 165 to 140 days while rain- 
fall varies from 32 to 18 inches. Generally speaking, rainfall 
below 24 inches or growing season below 125 days becomes an 
effective limiting factor in ordinary farming. Since nowhere 
98 
