25 



The following table gives a summary of each 

 Quality of Plant manufacturer's brands, as related to quantity 

 Food in Ammoniat- and quality of nitrogen used in the ammoniated 

 ed Superphosphates, superphosphates. 



MANUFACTURER 





.5g 



26 



O O 



W. H. Abbott 



American Agric. Chem. Co 



Armour Fert. Works 



Baugh & Sons Co 



Beach Soap Co 



Berkshire Fertilizer Co 



Bowker Fertilizer Co 



E. D. Chittenden Co 



Coe-AIortimer Co 



Essex Fertilizer Co 



John Glennie 



Thos. Hersom & Co 



International Agric. Corp 



Listers Agric. Chem. Works . . . 



Lowell Fertilizer Co 



Mapes Form. & Peru. Guanc Co 



National Fertilizer Co 



New England Fert. Co 



Olds & Whipple 



Parmenter Sc Polsey Fert. Co... 



Reading Bone Fert. Co 



Rogers & Hubbard Co 



F. S. Royster Guano Co 



J. W. Sanborn 



Sanderson Fert. & Chem. Co.. . 

 ^l. L. Shoemaker & Co., Ltd.. . 



Springfield Rendering Co 



Whitman & Pratt Rend. Co. . . 



Wilcox Fertilizer Co 



Worcester Rendering Co 



4.78 

 3.53 

 3.90 

 2.87 

 2.52 

 4.05 

 2.88 

 4.07 

 3.39 

 3.57 

 4.22 

 5.91 

 2.95 

 2.42 

 3.24 

 3.20 

 3.64 

 2.97 

 6.19 

 2.52 

 2.10 

 3.70 

 3.47 

 4.08 

 3.94 

 4.10 

 3.95 

 2.99 

 2.85 

 3.35 



71.76 

 89.52 

 84.36 

 78.75 

 79.36 

 79.51 

 85.07 

 89.43 

 82.60 

 84.32 

 74.40 

 83.59 

 83.73 

 83.88 

 83.34 

 86.56 

 84.34 

 81.82 

 80.30 

 85.32 

 90.95 

 90.54 

 78.96 

 76.96 

 85.54 

 86.10 

 88.86 

 88.30 

 77.54 

 85.37 



.95 

 2.13 

 1.96 



.86 



.28 

 1.20 

 1.37 

 2.48 

 1.63 

 1..32 



.42 

 3.31 

 1.47 

 1.28 

 1.19 

 2.23 

 1.93 



.89 

 1.95 



.93 

 1.13 

 2.23 

 1.39 



.55 

 2.02 

 1.03 

 1.81 

 1.13 



.89 

 1.31 



3.83 

 1.40 

 1.94 

 2.01 

 2.24 

 2.85 

 1.51 

 1.59 

 1.76 

 2.25 

 3.80 

 2.60 

 1.48 

 1.14 

 2.05 



.97 

 1.71 

 2.08 

 4.24 

 1.59 



.97 

 1.47 



2.04 



64.75 



73.57 



68.56, 



69.65 



76.79i 



70.88 



71.. '52 



72.96! 



66.48; 



75.11; 



71.58i 



62.701 



67.57J 



65.791 



73.66| 



55.67; 



66.67i 



74.04J 



71.22(1 



76.74 



80.41 



76.20 



64.90 



73.37 



70.31 



81.44 



79.44 



81.28 



67.35 



75.98 



56.60 

 57.95 

 61.14 

 51.59 

 51.40 

 57.87 

 59.81 

 .53.26 

 53.18 

 57.26 

 44.61 

 53.59 

 57.52 

 53.01 

 .55.37 

 36.77 

 .52.69 

 56 . 10 

 68.07 

 57.47 

 65.46 

 58.82 

 .57.31 

 62.99 

 .54.76 

 62.00 

 62. 39 

 66.02 

 60.25 

 47.88 



The quality of the nitrogen used in the ammoniated superphos- 

 phates is shown by the following data: average total nitrogen found 

 3.58%; nitrogen in form of nitrates and ammoniates 1.44%; organic 

 nitrogen 2.14%. Expressed in another way, 40.2% of the total ni- 

 trogen was present in mineral forms and 59.8% in organic forms. 

 In regard to the quality of the organic nitrogen used, it was found 

 that .71% was water soluble and 1.43% water insoluble. Of the 

 latter .82% was found active and .61% inactive by laboratory meth- 



