BULLETIN 77, U. S. DEPARTMENT OF AGRICULTURE. 



the specimens, the kind of wood, the locality where secured, and the 

 number of the table in which the individual tests are recorded. 



Table 1. — Material tested. 



Species and form of 



Individual test 

 records given in — 



Number 

 of pieces. 



Source. 



material. 



Table 

 No. 



Reference 

 Nos. 



Lodgepole pine (ship- 

 ment A): 



Round props 



/ 11 

 \ 12 



/ I 3 



I 14 



/ 11 

 1 12 

 / 13 

 I 14 



/ 15 

 I 16 



/ I 5 

 I 16 



/ 11 

 I 12 

 / 13 

 I 14 



/ 11 

 I 12 

 / 13 

 I 14 



/ 11 

 I 12 

 / 13 

 I 14 



/ 11 

 I 12 

 / 13 

 \ 14 



/ 11 

 \ 12 

 / 13 



\ I 4 



/ 11 

 I 12 



/ 13 



I 14 



ItolO 

 lto5 



ItolO 

 lto5 



11 to 20.... 

 6 to 10 

 11 to 20.... 

 6 to 10 



lto30 



1 to 15 ... . 



1 tola 

 1 to 30 



lto9 

 lto3 

 1 to 9 

 lto5 



1 to 11 

 lto7 

 ltoll 

 lto5 



ItolO 



I to 5 

 ItolO 

 lto5 



ItolO 



lto5 



ItolO 

 lt0 5 



ItolO 

 lto5 

 ItolO 

 lto5 



II to 20.... 

 6 to 10 



11 to 20.... 

 6 to 10 



i 15 

 } 15 



I 15 

 I 15 



I 45 



} 45 



I 12 

 I U 



} 18 

 1 16 



I 15 

 I 15 



1 15 

 I 15 



I 15 



} 15 



> » 



} » 



[Yards of Northern Coal & Coke Co., at Louisville, 

 i Colo . Probably cut on the west slope of the divide 

 [ in Colorado. 



Do. 



Lodgepole pine (ship- 

 ment B): 



Round props 



(Yards of Northern Coal & Coke Co. Probably cut 

 \ on east slope of the divide in Boulder Co., Colo. 



Do. 



Lodgepole pine: 



/Gunnison National Forest, Colo. (Cut from live 

 \ timber.) 



/Gunnison National Forest, Colo. (Cut from tim- 

 \ ber standing dead for 30 years.) 



(Partly from yards of Northern Coal & Coke Co., 

 \ partly from Arapahoe National Forest, Colo. 

 Do. 



Lodgepole pine (fire 

 killed): 



Alpine fir: 



Round props 



Engelmann spruce: 

 Round props 



/Partly from yards of Northern Coal & Coke Co., 

 \ partly from Pike National Forest, Colo. 



Do. 



Douglas fir: 



Round props 



/Partly from yards of Northern Coal & Coke Co., 

 \ partly from Gunnison National Forest. 



Do. 



Bristle-cone pine: 



Round props 



Pike National Forest, Colo. 

 Do. 



Western yellow pine 

 (shipment A): 



Round props 



Caps 



/Pike National Forest, Colo. (Shipped as "Black 

 \ Jack.") 



Do. 



Western yellow pine 

 (shipment B): 



Round props 



/Partly from yards of Northern Coal & Coke Co., 

 \ partly from Gunnison National Forest. 



Do. 







The material from the National Forests was received at the labora- 

 tory in a green condition. The timbers from the yards of the coal 

 company were partially air-dried. Upon arrival at the testing sta- 

 tion all green material was barked and some of the specimens were 

 soaked in water, while others were piled to air-season. The object 

 of the water-soaking was to keep the timber in a green condition 

 until tested or, in the case of the dead beams, to increase the moisture 

 content to a point which would enable them to be compared with 

 green material. The material cut green and water-soaked is used as 

 the basis for making the comparisons with air-dry material. 



