440 REPORT OF INSPECTION WoRK OF THB 
‘ INTRODUCTION. 
NUMBER AND KINDS OF FERTILIZERS COLLECTED, 
During the year 1900, the Station’s collecting agents visited 
138 towns between April 5 and October 1, obtaining 638 samples 
of commercial fertilizers. These samples represent 450 different 
brands, the product of 92 different manufacturers, each manu- 
facturer being represented by from one to 28 brands. 
The subjoined tabulated statement indicates the different 
classes included in the collection. 
CLASSES OF FERTILIZERS COLLECTED, 
Brands con- 
Brands con- tajaine 
Brands con- 
Brands con- aac Brands con-_ taining nitro- ce Brands of 
taining only as nd one taining only gen and phos- pheep none complete 
nitrogen, pase. potash. phoric acid ne fertilizers. 
acid, without potaah.| posses with 
Pp * out nitrogen. ; 
10 37 9 20 48 3826 
‘ COMPOSITION OF FERTILIZERS COLLECTED, 
The following tabulated statement shows the average composi- 
tion 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, ~ 


Average 
Per ct. guaranteed Per ct. found. per ct, 
found 
Lowest Highest Average. Lowest. Highest. average, 200ve 
. Highest. ge. . Highest. 2x. orsaamee 
tee. 
Nitrogenys ise. sss) Osan 8.25 2.06 0.44 8.15 2.16 0.10 
Available phos- 
phoric acid.... 0.638 12.00 7.62 120. oleae 8.90 1.28 
Insoluble  phos- 



phoris acid.... —— 0-004 2ay20 2.50 
Potash pipiens cress 10D La One 4.43 0 fe Cok hae 4,84 0.41 
Water-soluble ni- 
trogenie, 7)... _oCc oor OO 0.00 7.10 0.89 —— 
Water-soluble 
phosphoric acid -——- -——— —— 0.00 9.95 5.02 —— 
