COAL-TAR AND WATER-GAS TAR CREOSOTES. 
25 
the coals used in by-product ovens were a mixture of two or more 
coals, as is customary in this industry. 
These samples were collected from the States of Rhode Island 
Massachusetts, Connecticut, New York, Pennsylvania, Delaware, 
Maryland, Ohio, Illinois, Missouri, Wisconsin, and Alabama. They 
represent fairly this country's total production of coal tar. 
Table 9. — Coal tars used in experimental ivork. 
Tar 
num- 
ber. 
Kind of retort or oven. 
Kind of coal. 
Temperature. 
1 
Youghiogheny 
White to cherry. 
Cherry. 
Do. 
2 
do 
...do 
3 
do 
do 
do 
do 
....do. 
do 
4 
;;:..do : 
Do. 
5 
do 
Orange. 
6 
....do 
Cherry. 
Red. 
7 
8 
do 
do 
do 
do. 
do 
Cherry. 
Do. 
9 
do 
10 
do 
White. 
11 
...do 
White to Cherry 
Orange. 
12 
do 
13 
do. 
.do 
Do. 
14 
do... 
Cherry. 
Orange. 
15 
do.... 
....do 
16 
.. .do. 
..do 
Red. 
17 
Cherry. 
Do. 
18 
do 
do 
19 
...do. 
...do 
Do. 
20 
....do. 
....do 
Orange. 
21 
do. .. 
Mixed 
Cherry. 
22 
do. 
do 
Do. 
23 
Westmoreland 
Do. 
24 
Otto oven 
Native 
1,100 to 1,300° C 
25 
...do. 
26 
do. 
Mixed 
27 
.do. 
. ...do 
28 
...do. 
....do 
29 
WestmorelandandPocahontas 
Mixed 
30 
do. 
31 
..do. 
....do 
32 
...do. • 
West Virginia 
33 
..do. . 
34 
.do. 
35 
The samples of water-gas tar were taken for the most part at 
plants making both water gas and coal gas, but a number were col- 
lected from plants using only the water-gas process. They were 
taken from the same States as the coal-tar samples, and fairly repre- 
sent the production of this kind of tar east of the Mississippi Kiver, 
'f not of the whole country. Table 10 indicates the number of the 
^ater-gas tars, the kind of oil used, the temperature regulation, and 
fhether the plant manufactures coal gas also. 
