.■5"<; JOURNAL OF FORESTRY 



Hoppus String Measure. A method of measuring the cubic contents of logs aadi 

 other round timber. The formula for determining the cubic contents is — 



( 4 j ^ Til 



in which G equals the girth in inches, L the length of log in feet, and C 

 equals the cubic contents. In practice the girth is taken at center of log, 

 inside of bark, by means of a string, the quarter girth then being found by 

 doubling the string (girth length) twice and measuring to the nearest quarter- 

 inch. The length (L) is measured to the nearest one-half foot. Contents are 

 determined to the nearest one-half cubic foot. When the girth measurement 

 can not be taken insdde of bark an allowance is made for bark thickness. 



In theory the Hoppus String Measure reduces a round log to its square- 

 equivalent. (U. K.) See Caliper measure; Liverpool String Measure. 



Horizonal band resaw. A band resaw which cuts in a horizontal line, as com- 

 pared to a vertical band resaw which cuts in a vertical line. (Gen.) 



Horn knot. See Spike knot. 



Horse bucker. A stave bucker operated by a sweep horse power. (S. F.) 



Horse dam. Temporary dam made by placing large logs across a stream, in 

 order to raise the water behind it, so as to float the rear. (N. F.) 



Horse logs, to. In river driving, to drag stranded logs back to the stream by 

 the use of peaveys. (N. F.) 



Hot logging. A logging operation in which logs go forward from stump to mill 

 without pause. (Gen.) 



Hot skidway. A skidway from which logs are immediately loaded. (N. W.) 



Hovel, n. A stable for logging teams. (N. W., L. S.) 



Husk, n. The frame supjiorting the arbor and other working parts of a large 

 circular saw. (Gen.) 



Ice a road, to. To sprinkle water on a logging road so that a coating of ice may 



form, thus facilitating the hauling of logs. (N. F.) 

 Ice box. See Sprinkler. 

 Ice guards. Heavy timbers fastened fan-shaped about a cluster of boom piles- 



at an angle of approximately 30 degrees to the surface of the water. They 



prevent the destruction of the boom by ice, through forcing it to mount the 



guards and be broken. (N. F.) 

 Incinerator. See Eefuse burner. 

 Incline, ii. A portion of a logging railroad, the grade of whicli is too steep for 



the operation of locomotives, and up or down which the log cars are raised or 



lowered by means of a cable and power. When logs are hauled up grade the 



incline is sometimes called a hoist. (Gen.) 

 Inserted-tooth, n. See Bit. 

 Inserted-tooth circular saw. A circular saw on whose periphery are sockets in- 



which removable shanks and bits are inserted. (Gen.) 

 Inspect. See Grade. 

 Inspector. See Grader. 

 Interior trim. Lumber used for finishing the interior of buildings. (Gen.) 



Syn. : trim. 

 Irish standard. See London standard. 

 Irish standard hundred. See London standard. 



Jack, n. 1. A type of jack screw sometimes used for rolling logs off from the^ 

 rig-ht of way, where railroad grading is being done by hand. The jack screw- 

 was foi'merly used to shift logs on a landing where cars were being loaded hy: 

 hand. (P. C.F.) 



