New York AcricutruraAL ExprrRiMENT STATION. 409 
INTRODUCTION. 
NUMBER AND KINDS OF FERTILIZERS COLLECTED. 
During the year 1902, the Station’s collecting agents visited 
199 towns between April 2 and July 31, obtaining 924 samples 
of commercial fertilizers. These samples represent 446 different 
brands, the product of 51 different manufacturers, each manu- 
facturer being represented by from one to 174 brands. 
The subjoined tabulated statement indicates the different 
classes included in the collection. 
CLASSES OF FERTILIZERS COLLECTED. 









Brands con- Brands con- 
Brands con- ‘heats eat Brands con- | taining nitro- | taining phos- Brands of 
taining only Ph osphstl re taining only | gen and phos- phoric acid complete 
nitrogen tad potash. _phoric acid | potash without) fertilizers. 
: without potash. nitrogen. 
ré 34 10 nw 28 58 309 




COMPOSITION OF FERTILIZERS COLLECTED. 
The following tabulated statement shows the average compo- 
sition of the complete fertilizers collected during the year, 
together with a comparison of the guaranteed composition and 
that found by analysis. 
AVERAGE COMPOSITION OF COMPLETE FERTILIZERS COLLECTED. 














Per CENT GUARANTEED. PER CENT Founp. 
—_————————_—_—_—_—_—— | oe * E —j| Average 
ed a 
. . ounc 
- a es 4 u & above 
S 5 B ¢ ta ba guaran- 
5 is > 5 A | S tee. 
4 = < =) 7 < 
OA 3 ees ee a oe behead: 92). 08) 0 8 OF) a2 IAL eS? 
Available phosphoric acid..| 1.50) 12.00) 7.71) 1.72] 12.00) 8.62) 0.91 
Insoluble phosphoric acid .. ——-| ——-} 0.01} 5.84) 2.14; ——— 
MAME Ca ct Se hice ss 1.00; 11.00) §4.45) 0.55) 13.33} 4.67 0). 22 
Water-soluble nitrogen... ..| ———-| ——-| ———/| 0.00] 5.72] 0.93 
Water-soluble phosphoric 
Bel. eyes be ——-| ——-| ——--| 0.00) 9.80) 5.46) ——-— 








