The Connecticut Agricultural Station Reports 
for 1907, 1906, 1905, 1904 on the 
Relative Cheapness of High and Low Priced Fertilizers. 
The official reports of the Connecticut Experiment Station for 1906, 1905 and 1904 
contain the analyses of some eight hundred samples of brands of mixed fertilizers (samples 
taken in the market). In these reports of analyses the MAPES MANURES are given the 
highest valuation of all and on the ordinary basis of figuring valuations;” no benefit is 
received by the MAPES MANURES for the superior and more costly forms of Potash, 
as Nitrate of Potash and Carbonate of Potash (eight cents instead of five cents per lb.), 
nor of the superior forms in Peruvian Guano, Pure Animal Bone Flour, of Nitrogen, 
Ammonia, Phosphoric Acid, Potash, etc. 
Mapes Top Dresser, full strength 
Year. 
Official nnmlier. 
Ammonia. 
Phosphoric 
Acid. 
Potash. 
1904 
11775 
See note* Found 
12.17 
7.92 
6.51 
1905 
14191 
Found 
11.97 
8.44 
5.41 
1906 
16546 
Found 
12.73 
7.73 
4.56 
Average 3 years 
Guarantee 
12.29 
12 
8.03 
8 
5.50 
4 
Nearly aU soluble. 
•Ammonia total 12.17, insoluble (organic) 0.43. Phosphoric acid, total 7.92, insoluble 2.14. 
Potash, 6.51. AU soluble. 
Mapes Top Dresser, half strength (Half Plaster) 
1904 
17757 
See note* Found 
6.52 
4.08 
3.10 
1905 
14374 
Found 
6.01 
4.54 
2.83 
1906 
16543 
Found 
6.56 
3.97 
2.45 
Average 3 years 
6.36 
4.20 
2.79 
Guarantee 
6 
4 
2 
Nearly all soluble. 
Ammonia total 6.52. insoluble (organic) 0.19. Phosphoric acid total. 4.08, insoluble 1.22. 
Potash, 3.10. All soluble. 
Vegetable or Complete for Light Soils 
1904 
11730 
See note* Found 
7.55 
8.16 
7.35 
1905 
14193 
Found 
6.48 
8.66 
7.41 
1906 
16541 
Found 
6.68 
8.53 
6.82 
Average 3 years 
6.90 
8.45 
7.19 
Guarantee 
6 
8 
6 
•Nearly all soluble. 
Ammonia total 7,55. insoluble (organic) 0.61. Phosphoric acid, total, 8.16, insoluble 1.99. 
Potash, 7.35. All soluble. 
Tobacco Manure, Wrapper Brand. 
Year. 
Official number. 
Ammonia. 
Phosphoric 
Acid. Potash. 
1904 
X Average 3 samples 
Found 
8.01 
5.44 
10.60 
1905 
i4441 See note* 
Found 
7.89 
5.96 
11.08 
1906 
16704 
Found 
7.78 
5.69 
10.98 
Average 3 years 
. 7.89 
5.70 
10.89 
Guarantee 
7.50 
4.50 
10.50 
JStation Number 1904 samples 11590—11913—12130. 
•Nearly all soluble. 
Ammonia total 7.89 insoluble (organic) 1.85. Phos. acid total 5.96 insol. 1.29. Potash 11.08. 
All soluble. 
1904 
1905 
1906 
Average Soil, Complete Manure. 
11755 See note* Found 5.33 
14482 Found 5.08 
16527 Found 5.38 
7.55 
8.51 
8.62 
6.32 
5.43 
5.76 
Average 3 years 5.26 8.29 5.84 
Guarantee 5_ 8_ 5 
•Nearly all soluble. 
Ammonia total 5.33 insoluble (organic) 0.54. Phos. acid total 7.75. insol. 2.12. Potash 6 32. 
All soluble. 
Fine Bone Dissolved. 
1904 11851 See note* Found 3.53 15.76 
1905 14395 Found 3.52 15.53 
1906 16806 Found 3.92 16.71 
Average 3 years 3.66 16 
Guarantee 2.50 12 
•Ammonia total 3.53, insoluble (organic) 2.09. Phos. acid total, 15.76 insol. 0.92. 
Official Analyses Issued by the Connecticut Agricultural Experiment Station for 1907. 
Year Number 
1907 19151 Mapes Top Dresser, full strength 
1907 19010 Mapes Top Dresser, half strength 
1907 19187 Vegetable or Complete Manure for Light Soils 
1907 19373 Tobacco Manure, Wrapper Brand 
1907 19298 Average Soil Complete Manure .... 
Ammonia Phos. Acid Potash 
12.07 7.84 4.25 
6.01 3.94 2.14 
6.36 8.85 6.09 
7.60 5.25 11.43 
5.23 8.29 6.26 
“As a Rule, Fertilizers Which Sell at a Low Price are Really the Most Costly.” 
Page 55, Connecticut Station Report for 1905: 
“As a rule, fertilizers which sell at a low price are really the most costly if we regard the amount of 
plant food in them. 
1 ‘ Some brands of fertilizers sold in Connecticut by reputable manufacturers, and freely bought by some 
farmers, supply scarcely more than one-third of the plant food which can be bought for the same amount of 
money in other brands which are sold in the same places. That is, in buying these brands, the farmer is simply 
throwing away two-thirds of his purchase money.” 
The MAPES MANURES in this Connecticut Station Report, 1905, also for 1904, are given the highest 
valuation of all mixed fertilizers, samples taken in the market, on the ordinary basis of figuring “ valuations .” 
The American Agriculturist , Orange Judd Co., in reviewing this report for 1905, states: 
‘ ‘ The Connecticut Agricultural State Report again confirms what we have so often urged—that the cheaper 
the price per ton of a commercial fertilizer , the higher the cost per pound of the actual Nitrogen , Potash and Phosphoric 
Add it contains. Accordingly, it is not surprising that Dr. Jenkins contends some farmers are not getting 
the benefit from fertilizers that they might, because they go for cheapness instead of quality 
“ Exactly 600 commercial fertilizers and waste products have been analyzed and tabulated.” 
“VALUATION” OF FERTILIZERS 
They Fail to Determine the Quality of Goods. Established Reputation the Main Security to the Purchaser. 
Extracts from Annual Report of the Connecticut Agricultural Experiment Station, 
Prof. S. W. Johnson, Director, for year 1895. Issued December, 1895. 
“The valuations , it must be remembered, are based on the assumption that the nitrogen, phosphoric acid, and 
potash in each fertilizer are readily available to farm crops. Chemical examination can show pretty conclusively 
whether this is true in respect to potash. There is less certainty regarding phosphoric acid, while chemical ex¬ 
amination, as it is usually made, gives little or no clue as to the availability of the organic nitrogen of mixed goods.” 
“While various inferior or agriculturally worthless forms of nitrogen are in the market, the main security 
of purchasers of mixed fertilizers is in dealing with firms which have an established reputation , and in avoiding 
‘cheap 7 goods offered by irresponsible parties.”—Page 39. 
The Mapes Formula and Peruvian GuanoCo. 
143 LIBERTY STREET, NEW YORK 
Branch, 239 STATE STREET, HARTFORD, CONN. 
Descriptive pamphlets instiled free. 
