No. 6. 



DEPARTMENT OP AGRICULTURE. 



821 



The cases of deficiency noted during the past thirteen 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, 1S99-1905. 



g 



be 



c 



a 

 as 



*Only two samples analyzed. 



tOnly one sample analyzed. 



tOnly two samples Analyzed for which no guaranties are recorded. 



§Only two samples analyzed for which guaranties are recorded. 



Marked variations in the general percentage of deficiency occur 

 from year to year. The percentage of deficiency of all classes of 

 fertilizers for the present season is less than for several seasons 

 past. 



A comparison of the average composition of all samples of com- 

 plete fertilizers for which guaranties are recorded with the average 

 of the corresponding guaranties, for several seasons past including 

 those of this season follows: 



Average Composition and Guaranty Compared. 



a 

 a 



h 



3 

 o 



o> o 

 > u 



Phosphoric acid: 



Total 



Available, . . . 



Potash 



Nitrogen 



Fall, 1901. 



Phosphoric acid: 



Total 



Available, . . . 



Potash 



Nitrogen 



Spring, 1902. 



Phosphoric acid: 



Total, 



Available, . . . 



Potash 



Nitrogen, 



Fall, 1902. 



Phosphoric acid: 



Total 



Available, . . . 



Potash 



Nitrogen 



Spring, 1903. 



11.51 



10. CO 



2.77 



1.39 



10.80 

 8.25 

 3.90 

 1.62 



12.58 

 9.95 

 2.69 

 1.57 



11.90 

 9.36 

 3.85 

 1.58 



9.S2 

 8.06 

 2.66 

 1.39 



9.29 

 7.82 

 3.66 

 1.58 



11.40 

 9.29 

 2.60 

 1.55 



10.67 

 8.73 

 3.63 

 1.61 



