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Pit-sawyer. Workman who saws timber in a pit. 



Pitch. The angle between the back of a tooth and a line drawn 

 from the extreme point of the tooth in the back of a band- 

 saw, or to the centre of a circular saw. 



Pitch (of a Roof). The inclination of the sloping sides of a roof 

 to the horizon. Its relation to the " span of a roof " is 

 very important. In a "lean-to" roof, that is where the 

 apex of the roof leans against another building, " a pitch 

 of one half " would be the horizontal span, the result a " pitch," 

 " rake " or slope of 45 degrees. " One-third pitch " is the 

 most common one in roofing, i.e. 33 degrees. See " Roof." 



Pitch Pine, a species of trees, is known in America as yellow pine. 

 A wood reddish in colour resembling Scots fir, but heavier 

 and more resinous. The Gulf Coast classification comprises 

 the following : Loblolly Pine (Pinus talda), Longleaf Pine 

 (Pinus palustris), Cuban or Slash Pine (Pinus heterophylla) 

 and Short Leaf Pine (Pinus echinata). The last named is 

 known in commerce as " North Carolina Pine." 



Pitch Pockets are openings between the grain of the wood in 

 pitchpine containing more or less pitch or bark, and are 

 classified as small, standard and large pitch pockets. A 

 small pitch pocket is one not over J of an inch wide. A 

 standard pitch pocket is one not over f of an inch wide or 

 3 inches in length. A large pitch pocket is one over f 

 of an inch wide or over 3 inches in length. 



Pitch Streaks in pitchpine are well defined accumulations of 

 pitch at one point, and when not sufficient to develop a 

 well defined streak, or where fibre between grains is not 

 saturated with pitch, it is not considered a defect. 



Pith or Medulla. The cellular tissues in the centre of a tree stem, 

 which rarely runs perfectly straight, but usually snake- 

 like along its entire length, only a portion continuous with 

 the bark. 



Pit-props. Small round timber used in coal mines. Long props 

 are from 10 ft. up in length or 15 to 16 ft. with 3 in. tops. 

 Short props are from 2| ft. up to 7 and 8 with 2| in. and up 

 tops. 



Pixpinus. A special form of charterparty used in chartering 

 for cargoes of pitch pine. 



Plain Band-Saw. A name given to the smaller type of band- 

 saws, used for cutting sweeps and other work which can be 

 fed on to the saw by hand. 



Plain Sawed. All timber which is not quarter sawed, such as 

 flat grain, bastard grain, slash grain. 



