WORDS AND PHRASES 489 



a cable on a drum. It has a second drum for the haul 

 back. 



Road (Jaiijj^. That portion of the crew of a logging camp 

 who cut out logging roads and keep them in repair. 



Koad Monkey. One whose duty it is to keep a logging 

 road in proper condition. 



Roll. The crossbar of a logging sled into which the 

 tongue is set. 



RoHer. See Roll; Upright roller. 



Rolling Dam. A dam for raising the water in a shallow 

 stream. It has no sluiceways, but a smooth top of 

 timber over which, under a sufficient head of water, 

 logs may slide or roll. 



R()1I the liooiii. To roll a boom of logs along the shore 

 of a lake against which it is held bp 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. 



Rolhvay. See landing. 



Rooster. See gooseneck. 



Root Collar. The place at the base of a tree^where the 

 swelling which is the direct result of the ramifications 

 of the roots begins. 



Bosser. One who barks and smooths the ridge of a 

 log in order that it may slide more easily. 



Rotation. The period represented by the age of a for- 

 est, or a part of a forest, at the time when it is cut, or 

 intended to be cut. The follov^^ing classes of rota- 

 tion are distinguished: Financial Rotation, under 

 which a forest yields the highest net interest on its 

 capital value, calculating at compound interest. In- 

 come Rotation, under which a forest yields the high- 

 est net return, calculating without interest. Silvical 

 Rotation, the rotation most favorable to the natural 

 reproduction of the forest under a given method. 

 Technical Rotation, under which a forest yields the 

 material most useful for a certain purpose. Volume 

 Rotation, under which a forest yields the greatest 

 quantity of the material. 



Round Timber. Pine trees which have not been tur- 

 pentined. 



Round Turn. A space at the head of a logging sled 

 road, in which the sled may be turned around with- 

 out unhitching the team. 



Runner Chain. A chain bound loosely around the for- 

 ward end of the runners of a logging sled as a bi'uke. 



