THE TOXICITY TO FUNGI OF VARIOUS OILS AND SALTS. 
25 
Forties annosus: In 12 days the radial growth of the check reached 15 mm.; 0.1 per 
cent, 2 mm. In three weeks, 0.1 per cent showed about 20 mm.; 0.2 per cent, 5 mm. 
In six weeks, 0.2 per cent reached 17 mm.; 0.25 per cent, 15 mm.; 0.3 per cent, 5 mm.; 
0.35 to 0.6 per cent, from 1 to 12 mm. The growth on the toxic media was of a brighter 
creamy appearance than that on the check. 
United Gas Improvement Co. 1.07 oil (water-gas tar distillate). 
(PL III, figs. 25 and 26.) 
[Laboratory sample No. 1101. Cooperator, United Gas Improvement Co., Philadelphia, Pa. Mobile, oily 
liquid, with kerosene odor; specific gravity, 1.058at 60° C; flash point, 48° C; burning point, 65°C; 9.04 
per cent distills below 205° C. ; 24.24 per cent distills below 315° C. ; 67.9 per cent distills below 378° C] 
Tests. 
Times 
killing 
point 
veri- 
fied. 
Concentration of the preservative (per cent). 
Fungus. 
Num- 
ber. 
Dura- 
tion. 
o 
CO 
CO 
lO 
CO 
CO 
o 
I— 1 
CM 
O 
CO 
o 
M 
o 
CO 
O 
31 
22 
Weeks. 
4 to 8.. 
4 
4 
2 
3 
2 
2 
2 
2 
1 
1 
1 
1 
1 
4 
4to5.. 
2 
1 
4 
Fames annosus: In 10 to 14 days, the radial growth of the check reached 28 mm.; 
40 and 50 per cent, 2 mm. In four to six weeks, 40 and 50 per cent showed nearly 10 
mm. The growth on the toxic media appeared denser and of a brighter tan color than 
that on the check. 
Fomes pinicola: In two weeks, the radial growth of the check reached almost 40 
mm.; 3 to 29 per cent, 2 to 7 mm. In four to five weeks all concentrations between 
3 and 40 per cent showed 2 to 15 mm. The growth on the toxic media appeared 
velvety, compact, and creamy, while that on the check was a fluffy white. 
Wood tar (hardwood). 
(PL IV, figs. 41-47.) 
[Laboratory sample No. 1561. Cooperator, Marden, Orth & Hastings, Chicago, 111. Black, viscous liquid, 
with pyroligneous odor; specific gravity, 1.195 at 60° C; flash point, 90° C; contains 24 per cent water; 11.7 
per cent distills below 105° C; 50.9 per cent distills below 244° C; decomposition occurs above 230°.] 
Tests. 
Times 
killing 
point 
veri- 
fied. 
Concentration of the preservative (per cent). 
Fungus. 
Num- 
ber. 
Dura- 
tion. 
0.2 
0.5 
0.7 
0.75 
0.9 
1 
1.251 
Check. 
Fomes annosus 
50 
30 
Weeks. 
4to6.. 
4to5.. 

1 
....... 
4 
4 
4 
4 

4 
2 

4 
F. pinicola 
4 
1 Based on gum-arabic emulsions. 
Fomes annosus: In 9 to 10 days, the radial growth of the check reached 12 mm.; 
0.5 to 0.8 per cent, 1 to 2 mm. In two to four weeks the check reached 40 mm. and 
concentrations up to 1 per cent showed 10 to 35 mm. The growth on the toxic media 
was dark creamy and somewhat denser than that on the check. 
Fomes pinicola: In two weeks the radial growth of the check reached 40 mm. ; 0.5 per 
cent, 10mm. ; no growth above this. In four to five weeks 0.2 to 0.7 per cent showed 40 
mm. ; 0.725 per cent, 10 mm. ; no growth on higher concentrations. The growth on the 
toxic media was luxuriant, white, and fluffy. 
