SELLING LUMBER 457 



depth; medium, 1/16 of an inch; heavy, l /& of an inch; any 

 torn grain heavier than l /% of an inch shall be termed deep. 



29. Loosened Grain consists in a point of one grain being 

 torn loose from the next grain. It occurrs on the heart side 

 of the piece and is a serious defect, especially in flooring. 



30. Rot, Dote and Red Heart Any form of decay which 

 may be evident either as a dark-red discoloration not found in 

 the sound wood, or the presence of white or red rotten spots, 

 shall be considered as a defect. 



Firm red heart shall not be considered a defect in any of 

 the grades of Common Lumber. 



31. The grade of all regular stock shall be determined by 

 the number, character and position of defects visible in any 

 piece. The enumerated defects herein described admissible in 

 any grade are intended to be descriptive of the coarsest pieces 

 such grades may contain, but the average quality of the grade 

 shall be midway between the highest and lowest pieces allowed 

 in the grade. 



32. Lumber and timber sawed for specific purposes must 

 be inspected with a view to its adaptability for the use intended. 



33. All dressed stock shall be measured strip count, viz. : 

 Full size of rough material necessarily used in its manufacture. 



34. "Equivalent" means equal, and in construing and ap- 

 plying these rules the defects, whether specified or not, are un- 

 derstood to be equivalent in damaging effect to those mentioned 

 applying to stock under consideration. 



35. Lumber must be accepted on grade in the form in 

 which it is shipped. Any subsequent change in manufacture 

 or mill work will prohibit an inspection for the adjustment of 

 claims, except with the consent of all parties interested. 



36. The foregoing general observations shall apply to and 

 govern the application of the following rules : 



37. B AND BETTER CAR SIDING, LINING AND 

 ROOFING will admit any two of the following, or their equiva- 

 lent of combined defects: Sap stain not to exceed 5 per cent; 

 firm red heart not to exceed 15 per cent of the face; three pin 

 knots, one standard knot, three small pitch pockets, one stand- 

 ard pitch pocket, one standard pitch streak, slight torn grain, 

 or small kiln or season checks. Where no other defects are 

 contained, six small pin worm holes will be admitted. 



