212 Bacteriological Department. [Bull. 161 



ent treatments must be drawn from the last twelve weeks' 

 work. 



The study included two types of soil as nearly opposite in 

 character as it was possible to secure. Silt loam and fine sandy 

 loam were selected. The silt loam is situated upon the upland 

 Kansas State Agricultural College farm. This had previously 

 been used for an experimental plot; the year previous it was 

 planted to corn but received no special treatment or dressing. 

 The sandy loam is located on the Kaw river bottom close to the 

 stream ; it had previously been used for general farming. The 

 fall before this experiment was commenced it had received a 

 liberal dressing of straw manure. A plot 42 x 42 feet was 

 laid out on each field. The one on silt loam was called B ; the 

 one on sandy loam was called A. These plots were subdivided 

 into six smaller plots, and called IB, 2B, 3B, etc. Those of A 

 were likewise named. The following diagram illustrates the 

 plan of each plot : 



PLOT A. 



6A 



5 A 



4 A 



3 A 



2A 



1 A 



42 feet long. 



