VALUATION OF FERTILIZERS 



AND 



ANALYSES OF FERTILIZERS. 



PRICES OF NITROGEN, PHOSPHORIC ACID, AND POTASH. 



The prices to be used in computing values of Commercial Fertilizers 

 for the year 1884, are given in this bulletin. They are approved at 

 the experiment stations of Connecticut, Massachusetts, and New 

 Jersey, and furnish a uniform basis for comparisons of cost and com- 

 mercial values of different brands offered in market, when their 

 analyses are known. 



TRADE VALUES OF FERTILI^NG INGREDIENTS IN 

 RAW MATERIALS AND CHEMICALS. 



CENTS PER POUND. 



1881 1882 1883 1884 

 Nitrogen in Ammonia Salts, 

 " Nitrates, 



" Dried and fine ground fish. 



Organic nitrogen in guano and fine ground 



blood and meat, 20 24 23 1 8 

 Organic nitrogen in cotton seed, linseed 



meal, and in castor pomace, 16 18 18 18 



Organic nitrogen in fine ground bone, 15 17 17 18 



Organic nitrogen m fine medium bone, 14 15 15 16 



Organic nitrogen in medium bone, 13 14 14 14 



Organic nitrogen in coarse medium bone, 12 • 13 13 12 

 Organic nitrogen in coarse bone, horn 



shavings, hair, and fish scraps, 11 11 11 10 



Phosphoric acid soluble in water, 12|^ 12|^ 11 10 



" " " ammonia citrate,* 9 9 8 9 

 Phosphoric acid insoluble in dry fine ground 



fish, and in fine bone, 6 6 6 6 

 Phosphoric acid insoluble in fine medium 



bone, 5^ 5i 5^ 5| 



Phosphoric acid insoluble in medium bone, 5 5 5 5 



" " " coarse med. " 4^ 44^ 4| 4i 



" " " " " 4" 4^ 4 4 



" " " fine ground rock 



phosphate, 3^ 3 2f 2i 



Potash as high grade sulphate, 7^ 7 7 7^ 



" - Kainite, 5| 5 4i 4i 



" Muriate, 4^ 5 4A 4i 



♦Dissolved from two grams of Phosphate, ungromid, by 100 C. C. neutral solution 

 of ammonimn citrate sp. gr. 1.09 in 30 minutes at 40 deg. C, witli agitation once in five 

 minutes; commonly called " reverted " or " backgone " phosphoric acid. 



