October, 1922] fertilizer inspection, 1922 11 



on the basis of the cost of phosphoric acid at $1.48 per 

 unit, potash at $1.35 per unit and nitrogen at $6.40 per unit 

 we find the average value of these sheep manures to be 

 $15.24 per ton. Their cost was nearly four times their 

 commercial value. 



DEFICIENCIES IN ANALYSIS 



Twenty-two brands out of 97 analyzed or 22.6% showed 

 a deficiency of 0.2 per cent, or more in one or more of the 

 plant foods, nitrogen, phosphoric acid and potash. In 1921 

 forty-one per cent, of the samples showed deficiencies. 

 There is a decided improvement this year but it still indi- 

 cates a serious loss to the farmer using the brands which 

 showed these deficiencies. 



ANALYSES OF BRANDS 



The following table shows the detailed results of the 

 analyses of the different brands. In the table the names 

 of the manufacturers are arranged alphabetically and 

 under the name of each manufacturer the different brands 

 are arranged alphabetically. 



