50 JOURNAL OF FORESTRY 



Rolling dam. A dam for raising the water in a shallow stream. It has no sluice- 

 ways, but a smooth top of timber over which, under a sufficient head of water, 

 logs may slide or roll. (Gen.) 



Roll logs, to. To turn over the logs on a landing so that the bark marks can be 

 inspected by the scaler. (E. C.) 



Roll the boom, to. To roll a boom of logs along the shore of a lake against 

 which it is held by wind, by the use of a cable operated by a steamboat or 

 kedge. The cable is attached to the outer side of the boom, hauled up, then 

 attached again, thus propelling the boom by revolving it against the shore 

 when it would be impossible to tow it. (N. W., L. S.) 



Roll up. See Bank up. 



RoUway, n. 1. (Lum.) A platform at the mill onto which logs are unloaded 

 from log cars. It may be built around the edge of a pond or along the bank 

 of a stream to aid in dumping the logs into the water, or it may be so built 

 that it is used as a place for dry land storage of logs. (Gen.) 

 Syn.: log deck (Cal.), log dump. 

 (Log.) See Landing. 

 Roof board. See Shake. 



Roofers, n. One-inch lumber nailed to rafters as a backing for shingles. (Gen.) 

 Rooster, n. See Gooseneck. 

 Rosin, n. In the distillation of crude turpentine, the residue remaining after 



the volatile oils have been driven off. (Gen.) 

 Rosser, n. 1. One who barks and smooths the ride of a log in order that it may 

 slide more easily. (N. F.) 



Syn.: log fixer, rosser (P. C. F.), scalper, slipper (App.). 



2. One who peels pulpwood and logs. (N. W.) 



3. See Barker, 2. 



Rossing-mill, n. A plant at which bark is removed from pulpwood by means of 



machinery. (N. W., E. C.) 

 Rotary saw. See Circular saw. 

 Rotary veneer machine. A machine that cuts or peels a thin endless sheet of 



wood from a round log. (Gen.) 

 Syn.: peeler. 

 Rotten knot. A knot which is not as hard as the surrounding wood. (Gen.) 

 Rough-and-tumble landing. See Landing. 



Rough woods. (Turp.) A forest that has not been burned over. (S.F.) 

 Round, n. See Course. 

 Roimd boom. A limber boom used to impound logs during towing. (L. S.) See 



Bag boom. 

 Round knot. A knot that is oval or circular in form. (Gen.) 

 Round timber. Timber which has not been bled for crude turpentine. (S. F.) 

 Rudder boom. See Fin boom. 

 Run, U: A narrow trail, cleared of brush and stumps, down which logs are 



pulled by a power skidder. (S. F.) 

 Rim cutter. One who clears narrow trails which radiate from a pullboat or 



from a head-spar tree, down whicfi logs are hauled by a power skidder. 



(S. F.) 

 Rminer chain. A chain bound loosely around the forward end of the rear pair 



of runners of a logging sled as a brake. (N. W., L. S.) 

 Runner dog. A curved iron attached to the hind sled of a logging sled, which 



holds the loaded sled on steep hills by being forced into the bed of the road 



by any backward movement. (N". F.) 

 Rimning. See Cupping. 



