228 
' THE ’ RU RAL NEW-YORKER. 
March 10, 1906. 
The official reports of the Connecticut Experiment Station for 1904 and 1905 contain the analyses of over four 
hundred brands of mixed fertilizers (samples taken in the market). In both these reports of analyses the MAPES 
MANURES are giv(?n 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, Nitrate of Potash and Carbonate 
of Potash (eight cents instead of five cents per lb.) nor of the superior forms in Peruvian Guano of Nitrogen, Am¬ 
monia, Phosphoric Acid, Potash, etc. 
The Mapes 
Contain the Highest Grade Materials and 
1 Pure Peruvian Guano Rectifie 
complete Manures 
Most Soluble and Valuable Plant=Food Forms Known 
No 1 Pure Peruvian Guano Rectifie £ y our special*treatment to improve its solubility, without 
achlitv) Bone, nitrate of potash, carboi£ of potash, nitrate of soda, sulphate of ammonia, etc., etc. 
Without knowledge of the sources or ch**£ ter of the materials used in making a mixed fertilizer the 
chemist is unable to determine t&£ slant food value of the ingredients, particularly organic 
nitrogen phosphoric acid insoluble, and*Sa forms of potash. The following are the official analyses is¬ 
sued'"by the Connecticut State Agricultural Station, 1904-1905. The samples 14191, 14374, 14193, 
14441 reported in 1905 : 
Mapes Top Dresser, full strength *s e c note. 
Official Number. Ammonia. Phosphoric Acid. 
11775 
14191 
17757 
14374 
11730 
14193 
Found 
Found 
Guarantee 
12.17 
11.97 
12 
Potash.* 
6.51 
5.41 
4 
Mapes Top Dresser, half strength (Half Plaster) 
Found 6.52 4.08 
Found 6.01 4.54 
Guarantee 6 _ 4 
Vegetable or Complete for Light Soils fsee note. 
Found 7.55 8.16 
Found 6.48 8.66 
Guarantee 6 8 
Tobacco Manure, Wrapper Brand. 
Official Number. 
11591 
11913 
12130 
14441 
Average 4 
Ammonia. 
Phosphoric Acid. 
Potash.* 
Found 
8.00 
5.68 
10.21 
Found 
8.14 
5.39 
10.50 
Found 
7.90 
5.35 
11.10 
Found 
7.89 
5.96 
11.08 
samples, 
7.98 
5.59 
10.72 
Guarantee 
7.50 
4.50 
10.50 
Nearly all soluble. 
•Ammonia total 12.17 insoluble (orKanic)0.43. Phos. acid total, 7.92, insol. 2.14. Potash 8.51. All soluble. 
t •• •• 7.55 " “ 0.61... 8.16, “ 1.99. " 7.35. ** 
For 'highest scientific testimony on the practical dangers and 
loss to the farmer from acidity, see pages 6, 7, 8, in the Mapes De¬ 
scriptive Pamphlets, 1906, (mailed free). 
Page “A^rale^fei-Uizers 1 whiSh^elfat alow price, are really the most costly if we regard the amount of plant food in them.” 
“Some of the brands of fertilizers sold in Connecticut by reputable manufacturers and freely bought by some farmers, 
sunol v scarcely more than one-third of the plant food which can be bought for the same amount of money in other brands which 
am sold in the same places That is, in buying these brands, the farmer is simply throwing away two-thirds of his purchase 
m ° ne "Vhe Manes Manures in this- Connecticut Station Report, 1905, are given the highest valuation of all mixed fertilizers 
(samples takenln the market) on the ordinary basis of figuring “valuations.” Practically the same result as in the comparisons 
made in the Connecticut Station Report, 1904. 
Pag6 l “TtooSc t NU^on%. , L I closes of goods (mixed fertilizers) is reckoned at the price of nitrogen in raw materials 
of the best ” ishonest manu(act urer the opportunity to defraud the consumer, by * working off ’ inferior or 
almost worthless leather, bat guano, and similar materials which ‘ analyze well, containing up to 8 or 9 pet cent, of Vd ,, 0 Q™> 
i • 7 i ' *. r\A TUia lnforinritv is r»nf. rllPlfVWArftd l)V tll 6 cllGmiCctl GX&llli licit 1011. Blit S1I1C0 
G/OlJ U I I ^ •/ 
honest and with intelligent manufacturers. 
Page Potash as CarhonaU or Nitrate." “Since potash in these forms oosiisi considerably 
more than in sulphate or muriate, it should not be valued at the same rate as in mixed fertilizers. It is not possible inmost 
cases to determine by analysis whether the manufacturer’s claims are well founded, but ? assuming potash to be present in ton 
of nitrate or carbonate and valued at 7 1-t cents per pound, the valuations are as given: ...... , - 
“ Mapes Wrapper Brand would be $37.79 instead of $35-34.” This is without any allowance for extra value tor nitrate of 
potash. _ . 
Loss of Organic Nitrogen in Acid Soils. Extract from Bulletin No. 55, R. I. Station, Prof. H. J. Wheeler. 
Th 
rencf 
of the- 
that the existence of such a degree of .soil 
value of the nitrogen in the form of iisli and 
sold within the State. 
Acidity in Soils from use of Superphosphates. 
Conversion of Phosphoric Acid (water soluble) into Inert Forms in Unlimed Lands. 
Prof n J Wheeler Chemist of the Rhode Island Experiment Station, in r,ply Jo the query about using lime on a crop to which a superphosphate 
, iT *' ♦Tf wr iters and investigators oppose the use of superphosphates (acid phosphates) upon light sandy or 
has been applied states: home of the most reliable ' i^ease the aci<l«ty and is liable to be largely wasted if the previous 
raiuik soils unless they have been irs ' nned, sme l • 1 ^ ^ expected that the phosphoric acid of the superphosphates would, in few days, 
Obtain ft With Uifliculty, Wheu It outers lute this eouthinu- 
tion it is also practically insoluble in carbonated water.” 
In the case of the light sandy soils, even the lightest, many are more or less add. The Mapes Manures have been 
uniformly successful for many years past on those light soils and have brought them up to profitable .fertility and with the use 
of very little if any farm manures. It is upon these light soils that often from truck and fruit growing the largest profits have 
been made. The large profits are the result of extra high qualify, good carrying power of the product, and high average and 
fancy prices. The Mapes Manures with these truck and fruit growers, during an experience of many years (some cases twenty 
years or over) have been found to suit their wants in every way. Reports of visits to their farms have frequently been in the 
leading agricultural iournals. (I) We claim that these results are largely due to the special forms m the main ingredients that 
are supplied in the Mapes Manures. (2) Also freedom from objectionable aoiditv, either from free phosphoric acid or free sulphuric 
acidi On the contrary, the presence of carbonate of potash, etc., in the Mapes Manures for Truck and b ruits tend to CORRECT 
ACIDITY IN THE SOIL and bring about a condition (alkaline) favorable to nitrification, thus enabling the inert organic nitrogen o 
the soil to become soluble and active. (3) The phosphoric acid is not liable to reversion to “inert forms” m the soil with coming in 
onntaM with nvides of iron and aluminum. (4) The very large proportion of nitrogen (ammonia) is not only soluble, for use as 
plaiR C food^lRittufl ike organic nitrogen! is ready for immediate absorption by the roots of the plant. (5) It is also free from the 
large waste liable in the case of organic nitrogen particularly when used on acid soils. 
THE MAPES FORMULA AND PERUVIAN GUANO 00., 143 Liberty Street, New York. 
