1917] Е 
ZELLER—DURABILITY OF YELLOW PINE 139 
TABLE I (Continued) 
I | W | ш]. ЕУ | у рм мы 
Longleaf pine (Pinus palustris) 
N4104 | 27.8 | 16.667] .599 | 16.380 | 1.72 
№105 |24. | 14.440] .602 | 14.107 | 2.30 
04101 | 28. |15.747 | .562 | 15.629 | .75 | 19.64) 27. | 14. | 3.5 | .571| 1.25 
04102 | 27.2 | 15.350 | .564 15.1 1.33 
04103 | 27.3 | 15.206 | .557 | 15.052 | 1.0 
04104 | 26.7 | 14.760 | .553| 14.497 | 1 
04105 | 26. |16.090| .619 | 15.872 | 1.36 
Р4101 | 32. .390 | .574 | 18.327 | .34| 7.84 27. | 13. |3.75| .577| 2.88 
Р4102 | 30. .556 | .585 | 16.705 | 4.8: 
Р4104 | 30. .182 | .572 | 16.592 | 3.44 
В4201 | 27.8 | 18.073 | .650 | 17.752 | 1.78 | 22.34 30. | 18. | 1.00] .667| 1.43 
В4202 | 29. .772| .647 | 18.416 | 1.6 
В4203 .690 | .699 | 22.092 | 2.6 
В4204 | 30 9.760 | .658 | 19.652 |. 
В4205 1991 .683 | 21.735 | .29 
F4201 | 26.6 | 16.505| .620 | 16.076| 2.60| 9.54 30. | 16. | 2.25) .617| .88 
Е4203 | 28. |17.156| .613|17.150| .04 
Е4205 | 28.3 | 17.524 | .619 | 17.522| .01 
201 | 30. |19.192| .639 | 16.943 | 11.72 | 4.84 30. | 16. | 2.75] .645| 8.70 
С4203 | 31. |20.127 | .649 | 18.811 | 6.54 ; 
G4205 | 31.3 |20.241| .647 | 18.650| 7.86 
K4201 | 24.3 | 14.983] .616 | 14.893| .60| 4.94 32. |15. | 3.25) .603| .68 
К4202 | 25. |14,884| .595 | 14.778] .71 
К4203 |27. |16.130| .597 | 16.011| .74 
К4204 |26. |15.718| .604|15.644| .47 
К4205 |27. | 16.344] .605 | 16.198| .89 
1.4201 | 28.3 | 18.238] .645 | 18.235| .02| 3.52 32. |23. |4. | .648| 5.14 
1,4202 | 28.6 |18.918| .661 | 18.912 .03 
1,4203 | 26.8 523| .654|16.410| 6.35 
1.4204 | 25.8 |16.528| .641 15.206 | 8.00 
1,4205 | 24.8 |15.860| .640 | 14.072 | 11.2 
54201 | 28. |18.013| .643 | 17.047 | 5. 4.30] 32. |29. |4. |.628| 1.79 
54204 | 26.7 | 16.541] .619 |16.540| í 
№4205 | 27. |16.838 | .624 | 16.835| .02 
04201 7.052 | .609 | 16.220] 4.88| 3.24| 25. | 24. | 3.75| .598 8.80 
04202 6.808| .600 | 15.703| 6.57 
04203 5.432 | .594 | 14.600 ) 
042 2 |15.662 | .597 | 13.630 | 12.98 
04205 | 25.6 |15.186 | .593 | 13.027 14.21 
Р4202 6.302 | .604 | 13.810 | 15.28 | 5.6 | 25. | 30. | 4.5 | .590| 10.30 
P4204 | 25.2 | 14.797 | .587 | 12.485 | 15.61 
P4205 | 25.4 | 14.732 | .580 | 14.730 
SERIES В 
In this series lettered columns of blocks chosen from the 
same samples of longleaf, shortleaf, and loblolly pine as em- 
ployed in series A, were used. Five culture blocks were used 
in each column of blocks, and numbers 1 and 5 were left in 
their natural condition, while from 2, 3, and 4 the resin was 
extracted. The blocks were all labeled as described above, 
and those from which the resin was to be extracted were 
