406 DRY-FARMING 



period of nineteen years, naniel}', in 1903, when the 

 same thing was clone, and one crop was made to follow 

 another without an intervening fallow jaeriod. This 

 observation is an evidence in favor of clean summer 

 fallowing. The largest crop obtained, 28.9 bushels 

 per acre in 1902, was gathered in a year when the next 

 to the lowest rainfall of the whole period occurred, 

 namely, 11.41 inches. 



The precii:)itation varied during the nineteen years 

 from 10.33 inches to 18.46 inches. The variation in 

 yield per acre was considerably less than this, not 

 counting the two crops that were grown inniiediately 

 after another cro]). All in all, the unique record of the 

 Barnes dry-farm shows that thnnigh a ])eriod of nine- 

 teen 3Tars, including thy and comparatively wet 

 years, there was absoluteh' no sign of failure, except 

 in the first 3'ear, when probably the soil had not been 

 \nit in proper condition to support cro]3s. In ])ass- 

 ing it maybe mentioned that, according to the records 

 furnished by Senator Barnes, the total cost of o]3erat- 

 ing the farm during the nineteen j-ears was $4887.69 ; 

 the total income was SIO, 144.83. The difference, 

 $5257.14, is a very fair profit on the investment of 

 $1800 — the original cost of the farm. 



T]ie Indian Hcnd farm 



An equally instructive record is furnished by the 

 experimental farm located at Indian Head in Sas- 

 katchewan, Canada, in the northern part of the Great 



