[shutt-smith] 



CONTENT OF SOILS 



237 



Group 1662. Good growth. The concentration of sodium sulphate 

 throughout the members of this group is low and practically uniform. 



Group 1661. Poor and meagre growth. The percentage of 

 sodium sulphate in A (O'-O — 0'-5) is considerably higher than in the 

 corresponding member of Group 1662. The concentration decreases 

 in the lower samples. Judging from the sparse appearance of the 

 crop, the percentage of alkali in "A" probably represents the limits of 

 tolerance for wheat under irrigation. 



Group 1660. No growth, soil bare. In A (0'-0-0'-5) the con- 

 centration of sodium sulphate is -900 per cent and magnesium sul- 

 phate -273 per cent, an impregnation too high to permit of any 

 growth. Throughout the members of this group the alkali remains 

 between 1 per cent and 2 per cent. 



Wheat 



Series VII, Section 24 , Township 2 2 , Range 2 2 , West of 4th Meridian . 



These three groups were taken from a wheat field about six miles 

 north-east of Gleichen, Alberta. The area was not under irrigation 

 but obtained moisture from seepage from the irrigation canal. The 

 yield of wheat on the best part of the field would be probably 30 

 bushels an acre. The samples were collected on July 24th. 



Wheat 

 Sec. 24, Tp. 22, R. 22, W. of the 4th Mer. 



Discussion of Results. The impregnation of this area is white 

 alkali, the chief constituents being sulphate of soda and sulphate of 

 magnesia. Sulphate of lime in considerable amounts is present in all 

 the members of the three groups. 



