204 Missouri Agricultural Report. 



Barton, Audrain, Sullivan and DeKalb. Barton and Audrain were 

 completed in the field season of 1907, though Barton was begun in 

 1906. Sullivan was begun in 1907 and completed in 1909. DeKalb 

 was begun and completed in 1908. The soil maps of all of these 

 except DeKalb are ready for the engraver, and the data for the 

 reports has been collected, though the reports have not yet been 

 written. 



The result of this work shows great variation of detail in the 

 soils of the different parts of the State. In Audrain county, for 

 example, large areas of country are underlaid with the same kind 

 of soil. In the whole county there are only three or four main 

 upland soils. In Barton county, on the other hand, there are tlo 

 areas of more than a very few square miles with a uniform soil. 

 There are also many different kinds of upland soils. The soil map 

 of Audrain county, therefore, is simple, while that of Barton bi 

 complex. 



This amount of work has been accomplished at an expenditure 

 of about $10,000. The planning and supervision of the work is 

 done by the regular Experiment Station staff, and nothing is paid 

 these men in the way of salaries for soil survey work. The ex- 

 pense of the survey, therefore, consists of the salaries and field 

 expenses of the field men and the field expenses that are incurred 

 in supervision. In addition to this is the expense of publication of 

 the reports and incidental expenses of supplies, instruments and 

 other field equipment. 



Up to the close of 1908, this work was done by the experiment 

 station wholly, and appropriations made for that purpose by the 

 State Legislature. The Station got no aid in soil survey work 

 from any other source. Soil survey work of an intermittent char- 

 acter has been done in Missouri by the United States Bureau of 

 Soils. Their work consisted only of detailed work with a county 

 as a unit, but the detail to which they have carried it has not been 

 so great as that of the detailed work done by the Missouri survey. 

 The general plan of their detailed work, however, and the end 

 sought, was much the same as that of our own detailed work. In 

 the past ten years they have covered some eight or ten counties. 

 While the Missouri survey has not worked any of the counties that 

 have already been worked by the Bureau, yet it would be necessary 

 at some time in the future to do this, or else have a resulting soil 

 map of the State, part of which was done under the direction of 

 one institution and the rest under that of another. Such a result 

 could hardly be satisfactory. The resurvey of the Bureau's work by 



