PROTECTING WOODS AGAINST TERMITES. 7 
cially Eucnemidae,? as well as fungi. The tips of many treated stakes 
were badly checked at the last examination in 1922. 
TABLE 2.—Chemical analyses of oils B or No. 1* and A or No. 2? made by the 
manufacturer. 
15) 2. A, 
SAU eee ee a SRS caer re ake eee ey ee RS Re I ol cee ek 2 
Pe eae A PE 6 ps SE Ne eae ME ae ec RS et INS arti ot Oh 
oS Ge pe | etm Gil ae Sit See eg UR es Re ty Na cate et gene pe os ae ee 
SE ee ONIN Pn MIA 2 ed 308 A oe RE Ue RR SE Ma ea ah 8 
ST A A sb ed 05 en ee, i es ae Se oe Ae ee ee 
SLOT Pree aT NAG Baa pee oe oe eS 9 So mR ema Aenea Dea tie eee ear 
AR ATACIASE Ds) EA a sR ee ee ene eh FEO DeeE fue A Reo SO RED ABE oe per cent. . 
Dy Mapltbatere:t:'; Se 5 shin So) ie i Se aS ie ae mys re tea oo a doze 
CF ONT Re 
i 
we 02 
SOHONDIHOO 
neg 
N 
SS SNONOW 
O9 > 
SC DISD NS, 
w 
oo 
Nw 
S 
1 Fraction 210°-235° C. solid at laboratory temperature. 
2 All fractions liquid excepting 315°-355° (which contained anthracene). 
NotEe.—Dry naphthalene represents solid matter at 15° C., but if cooled to zero sufficient solid matter 
would be obtained to bring it at least to 40 per cent. The percentage of solids in oil can be increased by 
lowering the temperature, and a 40 per cent naphthalene oil had been desired in the case of No. 1. 
Oil No. 1 (B) was intended for an oil high in naphthalene with a normal tar-acid content, whereas 
oil No. 2 (A) was intended for an oil high in tar acids with normal naphthalene content. 
Pine-tar oil; i. e., wood creosote (Mise. Div. No. 15787) 
Appearance, Dark brown, slightly viscous liquid. 
Odor, Pine-tarry and empyreumatiec. 
SDECING SHAVER mea 4 Cube thie 20 Ske es 1.0285. 
| Ess7f oh 0 100 CN mM as) he en Aa tee a ae Traces only. 
Water and pyrolioncovs acid. = eee Traces only. 
Mineral Onis hae oe. Sarg pt ies 2s Nee ap None. 
INS peo oe De RWIS he Cae ty he Ded oe __ 0.4 per cent by weight. 
Volatile oils excluding phenolic bodies (tur- 
pentine, pine oil, and apparently traces of 
POSTS SPN Ty eee eae Be en ert RANE PEIN 12.8 per cent by weight. 
Phenolic bodies (guaiacol, ete., volatile tar 
acids from wood tar, creosote, essentially 
EEOC 4 POR e ROA Car AGIOS) 2 < 2a. they ae oe 11.9 per cent by weight. 
Bodies not distilling below 360° C. (pitch, : 
VELV Nea MRYy -OIPSVELG, jolts A20 at RO he AS 10 per cent approximaiely. 
Rosin oil and other heavy pine-tar oils (by 
Publ ie et RO css og a ea Ey a 64.9 per cent 
Behavior on distillation: 
a5 1, Caggk Geta ae aa es Oe sa tence ot Bienen Ae ee 1.5 per cent by volume. 
ay a eid OAS 0, 25 Bile, Ga Gach Be BS all 4 per cent by volume. 
aR RA TOTe Oe Cee Fak Sp) 2 16 per cent by volume. 
SIO FTC sh es Oke a yk PES ag a s 11 per cent by volume. 
Pei Cl: Shelmente has COnrsek Mita ue eae te 16.5 per cent by volume. 
CF ge BE 10 05 | pe ce he 8 ne a > 42 per cent by volume. 
Pitch-loss ete: (by, diff: ys. es 9 per cent by volume. 
Consists essentially of the so-called heavy oil 
obtained in pine-tar distillation. 
Twelve stakes were impregnated by the full-cell pressure process 
with creosote oil (Oil B or No. 1, see analysis, Table 2, p. 7) contain- 
ing a high percentage of naphthalene; 12 stakes were impregnated 
with a creosote oil (Oil A or No. 2, see analysis, Table 2, p. 7) con- 
taining a high percentage of tar acids: 12 stakes were impregnated 
with wood creosote (see analysis, Table 2, p. 7, No. 15787) ; 12 stakes 
were impregnated by the Rueping (empty-cell) pressure process with 
creosote Oil A or No. 2; 12 were impregnated with creosote Oil B 
or No. 1, and 12 impregnated with wood creosote. There were 72 
treated stakes in all. In addition, 12 stakes were treated to refusal 
2 Especially Dromaeolus striatus Lec. 
