CONTROL OF DECAY IN PULP AND PULP WOOD 
21 
Table 6. — Chemical analyses of samples of sound white spruce wood from various 
parts of North America 
Designation 
of sample 
Company and locality 
Mois- 
ture 
Lig- 
nin 
Cellu- 
lose 
Ether 
solu- 
ble 
Alco- 
hol 
solu- 
ble 
Num- 
ber 
of 
■ an- 
nual 
rings 
Condition as ob- 
served under 
microscope 
VIIC 
VIIIB 
XIIIB 
XB 
Port Huron Sulphite & Paper 
Co., Edmonton, Alberta, 
Canada. 
Riordon Co. (Ltd.), Hawkes- 
bury, Ontario, Canada. 
Price Bros. Co. (Ltd.), Keno- 
gami, Quebec, Canada. 
Laurentidc Co. (Ltd.), Grand 
Mere, Quebec, Canada. 
Groveton Paper Mills Co., 
Groveton, N. H 
S. D. Warren Co., Cumber- 
land Mills, Me. 
Pejepscot, 10 miles north of 
Brunswick, Me. 
Ilammermill Paper Co., Fort 
William, Ontario, Canada. 
Marathon Paper Mills, Roth- 
schild, Wis. 
Fletcher Paper Co., Alpena, 
Mich. 
P.ct. 
3.3 
4.5 
5.0 
4.9 
5.0 
4.4 
4.2 
3.6 
3.1 
4.2 
P.ct. 
26.8 
28.0 
27.4 
28.1 
28.1 
26.9 
26.8 
27.6 
28.3 
27.9 
P.ct. 
61.7 
61.1 
60.9 
60.5 
60.7 
60.1 
59.7 
59.3 
58.5 
58.1 
P.ct. 
0.7 
.7 
1.5 
1.5 
.8 
.6 
.6 
.7 
1.2 
.9 
P.ct. 
0.4 
1.0 
.9 
.9 
1.1 
.8 
.8 
1.1 
.8 
1.0 
P. in. 
64 
110 
23 
40 
47 
75 
18 
85 
80 
27 
Occasional thread 
of mycelium. 
Do. 
Sound. 
Do. 
VIA 
IVA_. 
Id and Ig 
IXA 
VA._ 
Do. 
Do. 
Do. 
Do. 
Do. 
III A and bx_. 
Occasional thread 
of mycelium. 
DECAYED SPRUCE WOOD 
Spruce woods, Nos. 2545, 2546, and 2541, previously described in 
connection with the pulping tests and representing decay in increas- 
ingly advanced stages, together with two additional samples, were 
analyzed by the methods used for the sound wood VA. The addi- 
tional samples were No. 2549, a Minnesota wood nearly free from 
decay, and No. 2556, a Minnesota deadhead log taken from the 
bottom of the river. In Table 7, following the data for sound wood 
VA, are presented the data for decayed woods, arranged in the order 
of decreasing cellulose content. This is also the order of increasingly 
advanced stages of decay as evidenced by the general appearance of 
the specimens. Of the five, however, only No. 2541 was so far gone 
that it had been rejected at the mill. 
Table 7. — Analyses of sound and decayed spruce woods 
+_, <u|^ 03 

, 
, 
•2 
o 
as 
= 2 
a 
3 
3 
d 
f 3 ^ 
if 
i 
- 3 
»=! 
3 ■ 
•3 
a 
Sample 
No. 
Description 
^2 
03 cj 
o 
CO 
O 
CO 
. o 
-vO 
a 
-J__: 
O. 
a 
'a 
to 
O 
"3 
o 
2g 
a 
a 
CO 
o 
a 
c 
ff a 
_-i 
s 
CO 
o 
a 
w 
~z 
t^Z 
u 
u 
u 
< 
PQ 

Ph 
< 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
cent 
cent 
cent 
cent 
cent 
n ni 
Cl lit CI lit 
cent 
CI lit 
cent 
C lit 
cent 
VA 
Sound spruce, average... . 
2. 2 
3.8 
1.2 
8.8 
18.9 
4. 1 
28.3 
58. 5 63. 5 
10. 1 
26. 1 
11.8 
L.8 
0.17 
2556 
Deadhead. . ... 
1.4 
1.3 
0.5 
12.0 
L9. 7 
5. y 
30. y 
59. 5 60. 
16.1 
23.9 
9.8 
2. 8 
.45 
2549 
Very slightly decayed 
3.4 
5.6 
1.5 
15.0 
24.0 
5. 5 
30.6 
54.6-._-- 




.38 
2545 
Slightly decayed, top of pile, 
Lo 
mill run ... ... 
4.1 
6.3 
1.7 
20. 6 
2*. 5 
7. 7 
30.5 
54. 1 42. 8 
37. 7 
19. 5 
11. 'A 
1.6 
1. 37 
2546 
Considerably decayed. 
5.5 
9.7 
1.3 
39.9 
49. 2 
17.4 
35.2 
46.9 27.8 61.4 
10.8 
y.4 
2. 6 
.75 
2541 
6.5 
11.9 
1.4 
50. 2 62. 3 
23. 5 
38.2 42.0117.0174.6 
8.4 
8.6 
3. / 
.61 
1 
