172 



Journal of the Department of Agriculture. 



fine gravel and sand put topetlier, and 11.2 per cent, clay and very 

 fine silt. 



The greater part of tlie total amount of iron oxide and alumina 

 present in these soils is contained in the clay fraction, in sample 

 No. 2179 about 50 per cent, and in sample No. 1901 practically all 

 of it. 



In sample No. 1901 the fine gravel fraction is rather high for the 

 quartzite type of soil. From the farmer's point of view these soils 

 are lig-ht and easily Avorked, they will allow water to drain through 

 quite freely. 



Chemical Composition. — The following analyses are quoted to 

 illustrate the chemical composition of this type of soil: — 



