Table 1. -- Analyses of springwood and summerwood of some American woods . 
(Results in percentages on oven-dry (105° C. ) samples. ) 
Species 
Eouglas fir 
Heartwood 
Springwood 
Summerwood 
Western 
white pine 
Heartwood 
Springwood 
Summerwood 
Loblolly pine 
Sapwood 
Springv/ood 
Summerwood 
Heartwood 
Springv/ood 
Summerwood 
Red alder 
Heartwood 
Springwood 
Summerwood 
Catalpa 
Sapwood 
Springwood 
Summerwood 
Heartwood 
Springwood 
Summerwood 
White ash, 
sp. gr.0.68 
Sapwood 
Springwood 
Summerwood 
: Sample 
:Mois- : 
: ture : 
: 31S 
: 319 
6.92: 
4.S2: 
; 316 ; 
: 317 : 
4.78: 
3.^7: 
: 302 : 
: 303 : 
2.82: 
3.39 = 
: 304 : 
: 305 : 
3.13: 
2.16: 
: 300 : 
: 301 . 
3.25: 
3.16: 
: 312 : 
: 313 : 
6.76': 
4.04: 
; 3 iu ; 
: 315 
6.17: 
4.76: 
: 302 
: 309 
3.93 = 
2.89: 
Solubility in 
:Ace- 
:Meth- 
:Fento- 
:Lignin 
•Cellu-: 
• tic 
:oxyl 
sans 
• lo se : 
Cold: Hot: 1$ 
:acid 
water :NaOH 



: 
3.00:4,67:15.10 
2.15:3.76:14.56 
•0.62 
.71 
3.48 
3.40 
11.97 
9.89 
32.61 
29.20 
55.95: 
59.35: 
3.76:5.16:22.08 
4.29:5.^2:21.47 
1.42 
i.4o 
3.68 
3.25 
10.07 
9.82 
26.30 
25.30 
57- 60: 
60. 00: 
3.28:3.49:11.11 
2.18:2.97:11.01: 
1.28 
1.4l- 
4.05: 
4. 18 : 
11.59 
11.12: 
28.12 
26.78: 
58.06: 
6l. 21: 
7.50:7.16:15.14 
7.64:6.44:21.19: 
1.00- 
1.11. 
6.17: 
6.88: 
12.77: 
12.12: 
26.78. 
24.18: 
53.44: 
52.87: 
3.02:4.01:20.49: 
3.03:4.16:21.15' 
3.69: 
3.60 
5.18 
5.55: 
22.37. 
23.36- 
24.70 
23.O3: 
58.38: 
57.16: 
9.12-12.44:34.45 
7.29-10.11:27.97 
3.33 
4.45 
4.44 
4.10 
22.39: 
22.35 
23.64i 
18.68- 
50.37: 
56 . 49 : 
7.510.1.65:34.27 
2.69:5.26:24.15 
3.39 
4.07 
^.97 
3.37 
21.33 
21.50 
24.29 
19.35 
50.38: 
58.45: 
8.84-10.99:23.71 
6.13:8.18:19.32 
53.11 
:2.76 
1 5.^9 
: 5.1* 
21.45 
: 20.51 
• 24.35 
: 23.68 
i+9.73: 
54.17: 
Pentosans 
in 
cellu- 
lose 
R950 
-3- 
( continued on next page) 
