124 
JOSEPH BRECK & SONS 
(Corporation) 
Results fr#m Mapes Potato Manure 
The Mapes Manures 
Contain the highest grade of materials and the most 
soluble and valuable plant food forms known, viz.: 
No. 1 Pure Peruvian Guano Rectified (by our special 
treatment to improve its solubility, without acidity). 
Bone, nitrate of potash, carbonate of potash, nitrate of 
soda, sulphate of ammonia, etc. Without knowledge of 
the sources or character of the materials used in making 
a mixed fertilizer the chemist is unable to determine the 
plant food value of the ingredients, particularly organic 
nitrogen, phosphoric acid insoluble, and all forms of 
potash. 
Our friends and customers are familiar with the stand 
Mapes Fertilizer Co. took during the year 1915 and the 
fact that although the potash in other fertilizers was 
generally cut down to a maximum of 3 to 4 per cent., 
Mapes made up their brands precisely as in years past, 
supplying full contents of potash throughout the season. 
The situation as regards supplies of potash for 1916 
has gone from bad to worse. The price of muriate of 
potash is now firmly established at $250.00 per ton and 
upwards, and other grades which are so largely used, 
sulphate, carbonate, etc., have advanced proportionately. 
Under these circumstances even if potash could be 
obtained we could not advise customers to use fertilizer 
with full contents of potash because of the exorbitant 
prices which would have to be charged for them under 
present market conditions; nevertheless, our customers 
who used Mapes* brands last year, find themselves in a 
peculiarly fortunate position, having used Mapes’ brands 
with very high percentage of potash during past years 
which will help make up the deficiency this year. 
Everybody knows half a loaf is better than no loaf, 
and we believe 1 per cent, of potash, in spite of its 
high cost in its association with the abundant supplies 
of nitrogen and phosphoric acid, will give the plant from 
the very start a complete line of fertilizer feed. One 
per cent, of potash makes a complete fertilizer for early 
work and will go a long way in thoroughly and quickly 
establishing the plants. Therefore, Mapes Fertilizer Co. 
offer for season 1916 the following brands, believing that 
these analyses will give customers the best service under 
existing conditions. 
Mapes Manures are shipped wholly in 100 pound bags. 
Each bag is plainly printed, besides having a tag attached 
upon which is printed the guaranteed analysis, and full 
directions for use. Mapes Fertilizers are ground fine, dry 
and in the very best condition for use in machine drills, 
or for application by hand. 
Full information and special booklets mailed free. 
We are the sole Boston agents. 
DESCRIPTIVE PRICE LIST 
All 100-lb. Bags f. o. b. Boston. 
(Prices subject to change without notice). 
Per 100 
Potato Manure (War Brand). Ammonia, 4.50 ton lbs. 
to 5 per cent.; phosphoric acid, 8 to 10 per 
cent, (available, 8 per cent.); soluble potash, 
actual, 1 per cent. For Irish and Sweet Pota¬ 
toes, also for Asparagus, Early Vegetables, 
Tomatoes, Sugar Beets, Fruits, Sorghum, 
Sugar Cane, Sweet Corn, etc.$46.00 $2.40 
General Special (War Brand). Ammonia, 7 per 
cent; phosphoric acid, 8 to 10 per cent. 
(available, 6 to 8 per cent.) ; soluble potash, 
actual, 1 per cent .. 55.00 2.85 
Top-Dresser, Full Strength (War Brand). Am¬ 
monia, 12 per cent.; phosphoric acid, 8 per 
cent; soluble potash, actual, 1 per cent. 75.00 3.85 
Top-Dresser, Half Strength (War Brand). This 
is the Top-Dresser, full strength, reduced to 
half strength by admixture with equal 
weight of plaster. Ammonia, 6 per cent.; 
phosphoric acid, 4 per cent.; soluble potash, 
actual, Vz per cent. 47.00 2.45 
(All the above Manures, as in the past, are 
practically free from chlorine). 
Corn Manure (War Brand). Ammonia, 3 to 
3.50 per cent.; phosphoric acid, 10 to 12 per 
cent, (available, 8 to 10 per cent.); soluble 
potash, actual, 1 per cent. Also for Sweet 
Corn, Fodder Corn, Hungarian Grass, Millet, 
Late Turnips, Late Cabbage and Seedling to 
Grass . 40.00 2.10 
Cereal Brand (War Brand). Ammonia, 3 per 
cent; phosphoric acid, 8 to 10 per cent. 
(available 6 to 8 per cent.) . 32.00 1.70 
