32 



cultural Experiment Station, St. Paul. The sample is a composite 

 of 10 samples taken to a depth of 8 inches lengthwise of the bog. 

 The vegetation of the bog was largely cattails (Typha spp.) and 

 rushes (Scirpus spp.) The sample contained 5.60 per cent moisture 

 in the air dry condition. 



4. Fargo clay loam. The sample analyzed consisted of a 

 composite made from 144 borings taken to a depth of 8 inches from 

 a twenty-acre field on the Northwest Sub-station Farm, Crookston. 

 The sample was highly calcareous. This soil type has been de- 

 scribed by Mangum and Schroeder (1906). The moisture content 

 of the air dry soil was 3.92 per cent. 



5. Fargo silt loam. This sample was a composite made from 

 100 borings to a depth of 6 inches, twenty borings being taken from 

 each of five virgin fields near Nerstrand, Rice County. The sam- 

 ple had a neutral -reaction. The soil type has been described by 

 Burke and Kolbe (1909). The air dry soil contained 14.89 per cent 

 moisture. 



6. Carrington silt loam. This soil is represented by two sam- 

 ples. Each composite consisted of 100 borings to a depth o-f 6 

 inches, twenty borings being taken from each of five virgin fields 

 near Nerstrand, Rice County, for Sample number I, and twenty 

 borings being taken from each of five virgin fields near Morristown, 

 Rice County, for Sample number II. Sample 1 was strongly acid 

 while Sample II was but slightly acid. The soil type is described 

 by Burke and Kolbe (1909). The moisture content of sample I was 

 6.22 per cent. 



7. Hempstead silt loam. A composite sample from 36 borings 

 to a depth of 6 inches was taken from 12 plots on the Agricultural 

 Experiment Station Farm, St. Paul. No commercial fertilizer had 

 been applied, but the land had long been under cultivation. The 

 soil type has been described by Smith and Kirk (1914). The sam- 

 ple was strongly acid. The air dry soil contained 3.07 per cent 

 moisture. 



8. Prairie-covered loess. The sample consisted of 50 borings 

 taken to a depth of one foot, ten borings being taken from each of 

 five virgin fields near Luverne, Rock County. The sample was 

 somewhat calcareous. The area from which the sample was ob- 

 tained has not been subjected to a detailed soil survey. The air 

 dry soil contained 7.89 per cent moisture. 



9. Forest-covered loess. This sample w r as taken from five 

 virgin fields near Caledonia, Houston County, ten borings to a 

 depth of one foot being taken from each field and equal weights 

 from each boring being combined in the composite sample. The 

 sample was strongly acid. The air dry soil had a moisture content 

 of 1.87 per cent. 



10. Hempstead silt loam subsoil. This was a third foot bulk 

 sample taken from a grove on the farm of the Agricultural Experi- 

 ment Station, St. Paul. The sample was strongly acid. 



