86 
Mycologia 
TABLE III 
Durability of Sapwood after 6 Months’ Test 
[An asterisk (*) denotes that the blocks became too wet for a fair test.] 
Kind of Wood 
Flask 
Oven-Dry 
Weight (Grams) 
Loss 
No. 
Before 
Test 
After 
Test 
Grams 
Per 
Cent.s 
Remarks 
Eastern hemlock 
2 
6-55 
546 
1.09 
16.6* 
Rotted at ends. 
Mountain hemock 
2 
7.40 
6.13 
1,27 
17.2* 
Rotted at ends. 
Western hemlock 
5 
8.SS 
7-52 
1.03 
12.0* 
Engelmann spruce 
5 
6. II 
3-41 
2.70 
44.2 
Well rotted. 
Sitka spruce 
S 
5-74 
2.68 
306 
53-3 
Friable when dry. 
Red spruce 
5 
6-43 
3-39 
3-04 
47-3 
Friable when dry. 
White spruce 
.■5 
6.4s 
3-21 
3-24 
50.2 
Friable when dry. 
Alpine fir 
S 
6.IS 
3-40 
2.75 
44-7 
Friable when dry 
Grand fir 
S 
6.57 
3-90 
2.67 
40.6 
Well rotted. 
Grand fir 
.s 
S-P.? 
3-64 
2.31 
38.8 
Well rotted. 
Noble fir 
s 
6.53 
3-80 
2.73 
41.8 
Well rotted. 
Douglas fir 
8 
7.67 
3.96 
3-71 
48.4 
Friable when drj\ 
European larch 
5 
7.40 
3-73 
367 
49.6 
Friable when drj-. 
Western yellow pine. . . 
2 
7.27 
3-45 
3-82 
52 . 5 
Well rotted. 
Lodgepole pine 
2 
7.10 
3-79 
3-31 
46.6 
Well rotted. 
Longleaf pine 
8 
8.78 
3-85 
4-93 
56.1 
Friable when dry. 
Shortleaf pine 
8 
7.90 
2.79 
S-ii 
64.7 
Friable when dry. 
Table mountain pine. . . 
2 
7.80 
4-53 
3-27 
41.9 
Well rotted in spring- 
wood. 
Pitch pine 
2 
8.92 
7.60 
1.32 
14.8* 
White pine 
2 
4.20 
2.00 
2.20 
52.4 
Friable when dry. 
Sugar pine 
2 
S-ii 
2.31 
2.80 
54-8 
Friable when dry. 
Western white pine .... 
2 
8.10 
4-45 
3-65 
4 S-I 
Well rotted. 
White cedar 
8 
456 
4.07 
0.49 
10.7 
Well rotted on sap 
side — two- fifths 
heartwood. 
Western red cedar 
8 
4.86 
1.96 
2.90 
59-7 
Friable when dry. 
Port Orford cedar 
8 
6.20 
3.8S 
2.35 
37-9 
Well rotted at ends. 
California juniper 
8 
9 S 9 
8.44 
i-iS 
12.0* 
Western juniper 
8 
6.6s 
3-40 
3-25 
48.9 
Friable when dry. 
Bigtree 
8 
8.39 
5-24 
3-15 
37-5 
Well rotted in spring- 
wood. 
however, the test period is considered as beginning with the date 
of inoculation. 
Tables I to VI present the essential data, giving the loss in 
weight after the different test intervals, together with notes on the 
condition of the test blocks. 
In Table VII the preceding tables are summarized, averages be- 
ing given for both the heartwood and sapwood of hemlocks, 
spruces and firs and for the sapwood of the white and hard pine 
groups. Where the test blocks were too wet they have been 
marked by an asterisk and have been excluded from all averages. 
