No. 6. DEPARTMENT OF AGRICULTURE. 931 



Summary of Instances of Deficiency from Guaranty. 



The cases of deficiency noted during the past eight seasons in 

 the goods as compared with their guaranties expressed in percentage 

 of the total number of goods of each class analyzed, are as follows: 



Percentage of Deficiency, 1899-1902. 



CIS 



Complete fertilizers 



Dissolved bone 



Rock and potash 



Dissolved rock 



Ground bone 



All classes except miscellaneous, 



36.7 

 50.0 

 43.5 

 8.8 

 26.9 

 33.2 



•Only two samples analyzed. 

 tOnly one sample analyzed. 



Marked variations in the general percentages of deficiency occur 

 from year to year. During the past season they have been slightly 

 above normal. In most samples 'nhicli are found below guaranty at 

 one point, there is an excess at some other point, indicating that the 

 cause of departure from the composition guaranteed lay not in the 

 failure of the manufacturer to use the requisite components, but in 

 his failure to secure a uniform mixture. 



Considering all cases of complete fertilizers in which guaranties 

 were strictly comparable with stated analytical results and suffi- 

 ciently complete for the purpose: Of the one hundred and twenty- 

 six (126) samples in which there was deficiency at some point, there 

 were twenty-four (24) in which there was not distinct excess above 

 guaranty at some other point, though sometimes such excess was 

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