38 BULLETIN 1298, U. S. DEPARTMENT OF AGRICULTURE 
Table 13. — Preservative treatment of pulps — Continued 
Preservative 
Pounds 
of 
chemical 
per ton 
oven-dry 
pulp 
Effect of chemical on 
pulp 
Months 
in 
storage 
Condition at time of 
inspection 
Carvacrol oil No. 1 i > 6 
Do 
Do. 4 
Do.* 
Chromium sulphate 
Do 
Copper acetate 
Do „ 
Do 
Do 
Do 
Do 
Do 
Do 
Do.... 
Do 
Copper bromide 
Copper chloride 
Do 
Do.... 
Do 
Copper fluoride 
Do 
Copper nitrate, c. p 
Do 
Do 
Copper sulphate- 
Do.. 
Cymene (crude) ._ 
Do 
Cymene and naphthalene 
(equal parts by weight). 
Do. o 
DoA 
Dichlorobenzene 
Do 
Do 
Do.. 
Do 
Ferric chloride, U. S. P 
Ferric nitrate 
Ferric sulphate, c. p - 
Paraformaldehyde 3 -.. 
Do. 3 
Do. 3 
Do. 3 
See footnotes on page 43. 
37.0 A 
912.0 
269.0 S 
463.0 S 
96.3 
95.1 A 
9.7 
18.5 A 
18.7 
27.8 A 
37.1 
45.4 
9.7 S 
20.0 S 
41.0 S 
65.9 S 
29.7 
17.7 
57.4 
89.7 
100.3 S 
7.4 
10.1 S 
40.6 
60.9 
64.1 S 
77.9 
119.7 S 
2.0 
160.0 
1.0 
2.0 
4.0 
2.0 
4.0 
32.0 
48.0 
I 80.0 
37.9 
92.7 
116.3 
32.1 
72.0 
50.9 S 
113.0 S 
None. 
Brown 
Slightly brown. 
. — -do f— 
Bluish 
Slightly green. 
None 
Slightly brown. 
do 
Brown. 
do 
Slightly brown. 
.do. 
Brown . 
do 
Slightly brown. 
do 
do 
do. 
Brown. 
Slightly brown. 
do 
.do. 
do. 
do. 
Brown. 
do. 
None 
do... 
do- 
Brown. 
Darkened. 
do..... 
None.. 
do. 
.do. 
.do. 
Slightly molded and de- 
cayed. 
Slightly molded; no decay. 
No mold or decay. 
Do. 
Severely molded; slightly de- 
cayed. 
Severely molded. 
Severely molded and de- 
cayed. 
Somewhat molded and de- 
cayed. Failed before 16 
months. 
Somewhat molded and de- 
cayed. 
Somewhat molded at 6 
months; considerably at 
16 months. 
Somewhat molded; no decay. 
No change at 24 months. 
Slightly molded; no decay. 
Slightly molded and de- 
cayed. 
Somewhat molded; no decay. 
Somewhat molded and de- 
cayed. 
Do. 
Severely molded and de- 
cayed. 
Severely molded. 
Severely molded and de- 
cayed. 
Severely molded; no decay. 
Somewhat molded; no decay. 
Somewhat decayed at 24 
months. 
Severely molded and de- 
cayed. 
Slightly molded; no decay. 
Severely molded at 22 
months. 
Severely molded and de- 
cayed. 
Do. 
Do. 
Severely molded; slightly de- 
cayed. 
Somewhat molded and de- 
cayed. Failed before 24 
months. 
Severely molded. 
Somewhat molded. 
Do. 
Slightly molded. 
No mold or decay. 
Slightly molded. 
Very slightly molded on out- 
side. 
No mold or decay. 
Do. 
Slight mold on outside. 
Severely molded and de- 
cayed. 
Do. 
Do. 
Do. 
Somewhat molded and de- 
cayed. 
Slightly molded; no appreci- 
able decay. Considerably 
molded and decayed at 22 
months. 
Severely molded and de- 
cayed. 
