PROTECTING WOODS AGAINST TERMITES. 5 
TABLE 1.—Treatment and description of stakes, ete—Continued. 
ae Num- i Square 
Weight Ap- | ber of Dimen- ches 
Treatment and stake| Species | before | Weight after get annual onda sions of of 7 
No. of pine. | treat- treatment. a4 rings ; cross ae 
ment. ‘| per section. eR 
inch 
Dipping,carbolineum: Pounds.|: Pounds. Lbs. Inches. 
Stake 9/225 3. n Shortleaf.| 3.57 3. 64 0. 07 7 Sound. .--2.| 1.974. 25 | None 
OS cts les Gos. 252 4,22 4, 28 . 06 OA tknote se: | 1.944. 20 | None 
Lt Se Se do+f.. . 4.10 4,18 . 08 6 | Sound...... 2.084. 27 | None 
TUE hep Saco och arte ae GG-=-5- 3. 84 3. 91 .07 ie eer GOs 2 2.074. 23 | None 
LOLS ey. - ote dorssi:: 4. 04 4,12 . 08 Balssbas do......| 2.00 4.12 | None 
(pee es ee GOs 5. 3. 93 3. 99 . 06 4 | Large knot.| 1. 983.73 | None 
HOSES SAAS dowas2. 3.79 3. 87 . 08 7 | Sound......| 2.04 4.00 | None. 
1 fe, Ne ey (ee dol! - 3.64 3.73 . 09 PA ee do.. 2.073. 90 | None 
BOS S2eastae Gol-e 3. 39 3. 45 06 | Sty Pees do.. 1.903. 75 | None 
LOGS ee Lee GOse ne" 3. 47 3. 56° . 09 | 5) es doa 2.063. 88 | None 
tO fae eemris on fee do.. 4, 07 4.18 set ba 6 | Large knot-} 1.95x3.93 | None 
Fee ee ee doe. 4 3.53 gal ee dora. 2.003. 75 | None 
Stakes 1 to 12, inclusive, were treated by the open-tank process 
with coal-tar creosote, Laboratory Shipment No. 154. The preserva- 
tive was first heated to from 212° to 220° F., whereupon the speci- 
mens were immersed, the charge being held at the foregoing tem- 
perature for 1} hours. The charge was then allowed to cool, after 
which the specimens were removed and weighed. This process was 
repeated, the specimens being finally allowed to stand in the pre- 
servative overnight. The average absorption at the completion of 
the treatment was approximately 8 pounds per cubic foot. 
Stakes 13 to 24, inclusive, were treated by the open-tank process 
with wood creosote obtained from a turpentine company, Laboratory 
Shipment No. 126. The specimens were immersed in the preserva- 
tive at a temperature of 180° F. for 14 hours, after which the charge 
was permitted to cool overnight. 
Stakes 25 to 36, inclusive, were charred by permitting them to burn 
for approximately five minutes in an open fire. 
Stakes 37 to 48, inclusive, were merely dipped in coal-tar creosote, 
Laboratory Shipment No. 154, at a temperature of 216° F. 
Stakes 49 to 60, inclusive, were brush-treated with coal-tar creo- 
sote, Laboratory Shipment No. 154. The temperature of the pre- 
servative was 216° F., and three coats were applied at intervals of 
24 hours. 
Stakes 61 to 72, inclusive, were merely dipped in wood creosote 
secured from a turpentine company, Laboratory Shipment No. 126, 
at a temperature of 180° F. 
Stakes 73 to &4, inclusive, were brush-treated with wood creosote 
from a turpentine company, Laboratory Shipment No. 126, three 
coats being given at a temperature of 180° F. at intervals of 24 hours. 
Stakes 85 to 96, inclusive, were brush-treated with a high-grade 
earbolineum, three coats of the preservative being applied at a tem- 
perature of 170° F. at intervals of 24 hours. 
Stakes 97 to 108, inclusive, were merely dipped in a high-grade 
carbolineum at a temperature of 170° F. 
Thus 108 stakes were treated in all, numbered from 1 to 108. 
