N'ew York Agkicultukal Experiment Station. 223 



the separate ingredients, unmixed, averaged $18.28, or $8.38 less 

 than the selling price. 



INTRODUCTION. 



NUMBEK AND KINDS OF FERTILIZERS COLLECTED. 



During the spring of 1899, the Station's collecting agents vis- 

 ited 165 towns between March 28 and June 29, obtaining 866 

 samples of commercial fertilizers. These samples represent 646 

 different brands, the product of 114 different manufacturers, each 

 manufacturer being represented by from 1 to 39 brands. 



The subjoined tabulated statement indicates the different classes 

 included in the collection: 



Classes of Fertilizers Collected. 



Brands 

 Rronris nr,r, Containing Brands con- 

 Brands con- eranascon- nitrogen talning phos- Brands of 



taining.nly ta'ningony B-ands contain- ^nd phos- phoric acid complete 



Ditrolen. Phosphonc ing only potash, p^^^^/^ ^^i^ and potash with- fertilizers. 



^^'"' without outnitrogea. 



potash 



7 37 14 36 70 482 



COMPOSITION OF FERTILIZERS COLLECTED. 



The following tabulated statement shows the average composi- 

 tion of the complete fertilizers collected during the spring, to- 

 gether with a comparison of the guaranteed composition and that 

 found by analysis: 



Average Compositiox of Complete Fertilizers Collected. 



Per cent guaranteed. Per cent found. "s . 



' ^ > /—--•- -— , arts; 



•S w !>e -S as be u~^ 



S S g £ S g .=4a£-" 



2 a ^ ^ tz < ^'^^ 



Nitrogen 0.39 8.25 1.89 0.37 8.50 2.04 0.15 



Available phosphoric acid .... 1.93 14.00 7.78 1.20 15.12 8.76 0.98 



Insoluble phosphoric acid 0.13 10.80 2.22 .... 



Potash 0.75 15.00 4.56 0.43 12.95 4.86 0.30 



Water-soluble nitrogen 0.00 4.43 0.80 .... 



Water-soluble phosphoric acid 0.00 10.28 5.40 .... 



