NITROGENOUS FERTILIZERS. 
It has been said that since coal will never be distilled for the sake 
alone of the ammonia which its distillation liberates, the increase in 
the output of ammonium sulphate will depend on the increase in coal 
distillation. The inference is that the increase in ammonia produc- 
tion with the increase in the coke industry will be in the same ratio of 
ammonia to coke as exists in the industry to-day. This probably 
will not prove to be the case, owing to the replacement of the old 
form of oven by the by-product recovery type, both in old plants 
and in those undergoing erection. 
At the beginning of 1912 there were 4,624 by-product coke ovens 
in operation in the United States and 698 building. These were 
distributed as shown in Table V. 
Table V. — Number and location of by-product coke ovens in the United States. 
Location. 
Number 
of ovens. 
Number 
of ovens 
building. 
Location. 
Number 
of ovens. 
Number 
of ovens 
building. 
Alabama 
340 
480 
540 
200 
400 
162 
50 
150 
280 
48 
70 





New York 
556 
174 
1,292 
120 
160 

Illinois 
Ohio 

Indiana 
Pennsylvania 
300 
Maryland 
West Virginia 

Massachusetts 
Wisconsin 

Total 
4,624 
1 6^8 
New Jersey 
i Quoted from American Fertilizer, 38, 32 (1913). 
During the year 1912 about 155,000 short tons of ammonium sul- 
phate were produced in the United States. In the same length of 
time the United States imported about 60,000 tons, making a total 
consumption of ammonium sulphate in this country of about 215,000 
tons. 
The annual production for the United States for the last five years 
is given in Table VI. 1 
Table VI. — Production of ammonium sulphate in the United States, 1908 to 1912. 
Year. 
Production. 
Year. 
Production. 
1908 
Tons. 
83,400 
106,500 
116,000 
1911 
Tons. 
127,000 
155,000 
1909 
1912. . 
1910 
From this table it will be seen that the output for 1912 exceeds 
that for 1911 by 28,000 tons, while the increase for the preceding 
year was only 11,000 tons. It may be observed further that the 
domestic output has almost doubled during the five years. 
The world's production of ammonium sulphate in 1911 had reached 
the total of 1,187,000 tons. This, on the basis of a nitrogen content 
1 Quoted from American Fertilizer, loc. cit. 
