60 JOURNAL OF FORKSTRY 



Sorting gap. See Sorting jack. 



Sorting jack. A raft secured in a stream, through an opening in which logs 

 pass to be sorted by their marks and diverted into pocket booms or the down- 

 stream channel. (Gen.) 

 Syn.: sorting gap. 



Sorting table. In a sawmill, a long platform extending from the rear on which 

 lumber is assorted. (Gen.) 



Sort lumber, to. To take lumber from the sorting table and pile it on cars or 

 trucks in such manner that each species and grade may be taken to the 

 proper part of the yard. (Gen.) 



Sound cutting. In hardwood lumber, a piece that is free from rot and shake. 



Sound knot. A knot which is solid across its face, as hard as the surroundiug 

 wood, and so fixed that it will retain its place in the piece. (Gen.) 



Sound merchantable. As applied to lumber, a non-official, loosely interpreted 

 term which does not represent any established grade. Usually interpreted as 

 lumber that is salable for some specified purpose. (Gen.) 



Sound wormy. A term applied to a particular quality of oak and chestnut lum- 

 ber which contains pin worm holes. (Gen.) 



Spalt, n. The residue of a shingle bolt, after cutting off shingles, which is too 



narrow to be cut into shingles. (P. C. F.) 

 Spanish windlass. A device for moving heavy objects in logging. It consists of 



a rope or chain, within a turn of which a lever is inserted and power gained 



by twisting. (N. F.) 

 Syn.: twister. 

 Spar tree. See Head-spar tree. 

 Spider. See Set gauge. 

 Spiked roller. Rolls either round or concave, which are armed with spikes and 



designed to feed logs or slabs against a saw. They are usually power driven. 



(Gen.) 

 Syn.: spiked rolls. 



Spiked rolls. See Spiked roller. 



Spiked skid. A skid in which spikes are inserted in order to keep logs from 



sliding back when being loaded or piled. (Gen.) 

 Spike knot. A knot sawed in a lengthwise direction. (Gen.) 



Syn.: horn knot, mule-ear knot, slash knot. (P. C. F.) 

 Spike peddler. One who delivers spikes to spikers in a railroad track-laying 



crew. (S. F.) 

 Spiral grain. See Cross grain. 

 Spirits, n. See Turpentine. 



Splash, 1'. To drive logs bv releasing a head of water confined by a splash dam. 

 (Gen.) 

 Syn.: flood, sluice. 

 Splash boards. 1. Boards placed temporarily on top of a rolling dam to heighten 

 the dam, and thus to increase the head of water available for river driving. 

 (N.F.) 



Syn.: slash boards. (N. W.) 



2. A false gate placed on the up-stream side of a lift gate as an aid in rais- 

 ing the latter. (N. W.) 

 Splash dam. A dam built to store a head of water for driving logs. (Gen.) 



Syn.: cutaway dam (E. C), flood dam (Gen.). 

 Splicer, n. One who splices cables on a logging operation. (P. C. F.) 

 Spline, n. A rectangular strip of wood which is substituted for the tongue on 

 heavy factory flooring. (Gen.) 



