91 
AXTISKP I h 
Chlorideof 
Sulphate of 
Per tic. 
Per tie. 
Interest 
0. 40 
0.40 
6.25 
6. 56 
Labor 
3. 50 
3. 50 
Total 
10. 15 
10. 46 
[f the impregnation is to be produced by suction, the cost of plant 
will be $12,000, the cost of the antiseptic the same as before, and the 
cost of labor also the same, since, although it requires two men to attend 
to tlit^ same number of logs which one man can attend to in the direct 
Boucherie process, the treatment is completed in half the time. 
The cost of preservation by this method is, therefore, as follows : 
ANTISEPTIC. 
Chloride of zinc. 
Sulphate of copper. 
Per tie. 
0. 96 
6. 25 
3. 50 
Per cubic 
foot. 
Per tie. 
Per cubic 
foot. 
1 nt crest, repairs, and renewal, 20 per cent . 
0. 28 
1.80 
1. 00 
0.96 
6.56 
3. 50 
0. 28 ! 
1.90 
1. 00 
Total 
.10. 71 
3. 08 
11. 22 
3.18 
Recapitulation of cost of preservation of railroad tics with different antiseptics and methods. 
[Volume of ties, 3.5 cubic feet.] 
Antiseptics. 
1. Dead oil 
2. Bichloride of mercury — 
3. Chloride of zinc 
4. Chloride of zinc and tann 
5. Sulphate of copper 
6. Chloride of zinc 
7. Sulphate of copper 
8. Chloride of zinc 
9. Sulphate of copper 
Method of treatment. 
Modern method.. 
Steeping 
Modern process . 
Modern process.. 
Modern process. . 
Direct Boucherie 
Direct Boucherie 
Boucherie (suet.) 
Boucherie (suet.) 
Total cost. 
Per tie. 
Per cubic 
foot. 
25. 00 
7. 13 
14. 60 
4. 17 
08.25 
2. 30 
11.25 
3. 20 
08. 80 
2. 50 
10.15 
2. 90 
10.46 
3. 00 
10. 71 
3.0-i 
11.22 
3. 18 
As before stated, these estimates do not embrace the hauling of ties 
to and from the works. If the ties are destined for a new road just 
built, the preservation of ties by processes 2, 6, 7, 8, 0, in which the 
plant can be moved from one place to another, saves the carrying of the 
ties to distant works for treatment. No. 2, however, requires seasoned 
wood, and does not, therefore, offer as great advantage as the others. 
The entire cost of this transportation might, in some cases, amount to 5 
or even 10 cents per 'Je. 
