PROTECTING WOODS AGAINST TERMITES. 



Tests were also to be made of untreated native and exotic timbers 

 as to their relative resistance to attack by termites. 



In the tests of preservatives for timber to be used in contact with 

 the ground, stakes of southern yellow pine, 2 by 4 inches by 2 feet 

 long, were placed in holes 3 feet apart and 1 foot deep, the holes being 

 dug with a spade, 1 foot of the stake remaining above ground. The 

 treatment of the stakes was done by the Forest Service at the Forest 

 Products Laboratory, Madison, Wis., and a detailed physical descrip- 

 tion of each stake also was made. (Table 1.) 



Table 1. — Treatment and description of stakes treated for the Bureau of Ento- 

 mology by the Forest Products Laboratory of the Forest Service, Madison, 

 Wis. 



[Length of stake, 24 inches; length treated, about 17 inches.] 



Treatment and stake 

 No. 



Species 

 of pine. 



Weight 

 before 

 treat- 

 ment. 







Num- 



Weight after 



Ab- 



ber of 

 annual 



treatment. 



tion. 



rings 

 per 

 inch. 



Pounds. 



Lbs. 





4.86 



0.46 



7 



4.57 



.62 



8 



5.35 



1.22 



10 



4.51 



.31 



5 



6.29 



1.59 



15 



4.54 



.36 







5.74 



1.05 



17 



5.15 



.52 



7 



6.25 



1.54 



15 



4.77 



.58 



10 



4.58 



.37 



5 



4.17 



.27 



9 



5.17 



.31 



7 



3.69 



.34 



7 



3.88 



.23 



11 



4.00 



.21 







4.48 



.25 



5 



3.85 



.28 



7 



4.29 



.31 



8 



7.32 



1.61 



13 



3.87 



.22 



7 



4.37 



.42 



5 



3.67 



.30 



5 



3.94 



.36 



5 



4.08 



.21 



8 



3.67 



.14 



8 



3.84 



.20 



6 



5.31 



.18 



IS 



3.47 



.20 



5 



4.72 



.25 



19 



3.98 



.17 



6 



3.46 



.17 



7 



4.81 



.25 



7 



3.69 



.17 



7 



3.85 



.15 



5 



5.93 



.35 



18 



4.49 



.06 



6 



3.40 



.07 



5 



5.96 



.21 



15 



3.78 



.05 



6 



5.60 



.15 



13 



4.68 



.07 



12 



3.88 



.05 



5 



4.27 



.06 



6 



4.21 



.07 



7 



3.82 



.05 



6 



3.73 



.07 



7 



5.35 



.20 



16 



Condition. 



Dimen- 

 sions of 



cross 

 section. 



Square 

 inches 



of 

 sap- 

 wood. 



Open-tank, coal-tar 

 creosote (shipment 

 No. 154): 

 Stake 1 , 



2 



3 



4 



5 



6 



7 



Open - tank, wood 

 creosote (shipment 

 No. 126): 

 Stake 13 



14 



15 



16 



17 



18 



19 



Shortleaf. 



...do 



...do 



...do 



Longleaf. 

 Shortleaf. 

 Longleaf. 

 Shortleaf. 

 Longleaf. 

 Shortleaf. 



...do 



...do 



.do 



.do 



.do 



.do 



.do 



.do 



.do. 



20 



21 



...do 



22 





23 



...do 



24 



Charred : 



Stake 25 



26 



27 



28 



...do 



...do 



...do 



...do 



Longleaf. 



29 



30 





31 



Shortleaf. 



32 



...do 



33 



...do 



34 



35 



36 



...do 



...do 



Dipping, coal-tar 

 creosote (shipment 

 No. 154): 

 Stake 37 



Shortleaf. 



38 



39 



...do 



Longleaf. 



40 



41 





42 



43 



...do 



44 



45 



46 



...do 



...do 



do.... 



47 





Longleaf . 



Pounds 

 4.40 

 3.95 

 4.13 

 4.20 

 4.70 

 4.18 

 4.69 

 4.63 

 4.71 

 4.19 

 4.21 

 3.90 



4.86 

 3.35 

 3.65 

 3.79 

 4.23 

 3.57 

 3.98 



5.71 

 3.65 

 3.95 

 3.37 

 3.58 



3.87 

 3.53 

 3.64 

 5.13 

 3.27 

 4.47 

 3.81 

 3.29 

 4.56 

 3.52 

 3.70 

 5.58 



4.43 

 3.33 

 5.75 

 3.73 

 5.45 

 4.61 

 3.83 

 4.21 

 4.14 

 3.77 

 3.66 

 5.15 



Sound 



....do 



....do 



....do 



....do 



....do 



....do 



....do 



....do. 



....do 



....do 



....do 



do 



do 



do 



do 



3 knots 



1 knot 



Slight trace 



of decay. 

 Small knot. 

 Sound 



2 knots 



Sound 



do 



1 knot 



Sound 



do 



Checked . . . 



1 knot 



Sound 



do 



Large knot. 



Sound 



LaTge knot. 



Sound 



do 



do...... 



do 



do 



Small knot. 



Sound 



....do 



....do 



....do 



....do 



....do 



....do 



....do 



Inches. 

 2.10X3.96 

 2.06X3.95 

 1.94X4.06 

 1.94X4.08 

 2.12X4.18 

 1.99X3.97 

 2.15X4.15 

 2.08X4.15 

 2.15X4.18 

 2.08X3.82 

 1.92X4.15 

 1.86X3.96 



1.98X4.15 

 1.83X3.76 

 1.98X3.87 

 2.02X4.00 

 2.04X4.00 

 1.90X3.80 

 2.08X4.06 



2.26X4.17 

 2.09X3.93 

 2.15X4.13 

 1.92X3.78 

 1.90X3.82 



2.17X4.30 

 2.14X3.78 

 2.10X3.31 

 2.21X4.25 

 1.94X3.63 

 2.00X4.02 

 2.06X3.80 

 1.94X3.92 

 2.08X4.16 

 2.06X4.04 

 2.00X3.85 

 2.25X4.25 



2.06X4.01 

 2.11X3.90 

 2.42X4.11 

 2.15X3.77 

 2.20X4.18 

 2.08X3.75 

 2.20X3.90 

 1.99X3.80 

 2.15X4.25 

 1.98X4.02 

 1.98X4.05 

 2.20X4.17 



None. 

 None. 

 None. 

 None. 



2.5 



None. 



.2 



None. 



1.6 

 None. 

 None. 



1 



None. 

 None. 

 None. 

 None. 

 None. 

 None. 

 None. 



None. 

 None. 

 None. 

 None. 

 None. 



None. 



.4 

 None. 

 None. 

 None. 



.9 

 None. 

 None. 

 None. 

 None. 

 None. 

 None. 



None. 

 None. 



1.3 

 None. 



3.8 

 None. 

 None. 

 None. 

 None. 

 None. 

 None. 

 Nona. 



