LOGS (Stumpage per M feet board measure) 



Yellow birch 1 $44.00 



Basswood, hard maple 26.00 



White pine 22.00 



Norway pine 20.00 



Red or white oak 14.00 



Spruce, white birch, hemlock, 



soft maple 13.00 



Black or white ash 12.00 



Jack pine, tamarack, soft or rock 

 elm, cedar, oak, (species other 



than red or white) 10.00 



Aspen, all other species 6.00 



CORD PRODUCTS 2 (Stumpage per piled 

 cord, 4' x 4' x 100" or 4' x 8' x 4') 



Spruce 7.50 



Jack pine 5.80 



Hemlock 4.00 



Balsam 3.70 



Norway pine 3.50 



Tamarack 3.20 



White pine 2.70 



Aspen, white birch 1.80 



Mixed hardwoods, cedar 1.60 



Oak ("scrub") 1.20 



nu • i j ) Per cord .75 



Chemical wood ^ , OA 



) per ton .30 



Fuelwood, green, all species .50 



Excelsior bolts (Stumpage per 



piled cord, 4' x 8' x 55") 2.00 



PIECE PRODUCTS (Stumpage per piece) 



Posts and Poles 



7 and 8 ft. .03 



10 and 12 ft. .06 



14 and 16 ft. .12 



18 and 20 ft. .25 



25 ft. .50 



30 ft and over .80 



Christmas Trees 



Black spruce .30 



All other species .45 



It will usually be necessary to view or sample 

 several areas within a forty acre tract in order 

 to determine whether the stand is uniform. If 

 the stand is not uniform, an average estimate 

 for the entire forty acre tract can be made by 

 an actual count of trees within several circles 



1 These prices are conservative in relation to sales of 

 record. 



2 These values based on rough products. When report- 

 ing peeled cordwood volume, add the following percent- 

 ages to convert to rough cord equivalent: 



12 Yz percent for hand peeled 

 25 percent for machine peeled 



with a radius of 1 rod (16 1 /2 feet). A count 

 within such a circle multiplied by 50 will pro- 

 vide an estimate of size and stocking per acre. 

 The average of several counts within test circles 

 strategically selected will provide an average 

 estimate for the tract. 



A more rapid method for obtaining the in- 

 formation on volume of growing forest products 

 on a given description than the method de- 

 scribed above was devised in 1948 and is known 

 as the Bitterlich System and is referred to as 

 the point sampling method of measuring basal 

 area. This method requires the use of an angle- 

 gauge or a wedge prism with which the cruiser 

 counts the number of trees around a sampling 

 point whose diameters at breast height appear 

 larger than the crossarm of the angle-gauge. 

 When using a wedge prism, the cruiser counts 

 the number of trees whose stem sections at 

 breast height when viewed through the prism 

 do not appear to be detached from the main 

 stem. The tree count is multiplied by a pre- 

 determined factor and the basal area per acre is 

 obtained around a given sampling point. Since 

 there is a definite correlation between tree 

 basal area and tree volume, timber estimates 

 may be obtained by counting trees of merchant- 

 able height classes or by counting and record- 

 ing the total number of logs or pulpwood bolts. 

 This procedure must be repeated in a number of 

 areas for reliable results. 



Further information on the use of the above 

 method for timber cruising may be obtained 

 from technical bulletins provided by the Wis- 

 consin Conservation Department. 



After the size class (diameter range) and the 

 stocking class have been established the num- 

 ber of board feet or cords of the various forest 

 products can be read from the volume table 

 below. The column headed "Volume Range" 

 provides for the variation of tree height and 

 tree diameter within each size class. This varia- 

 tion also accounts for the great degree of over- 

 lapping in the number of trees per acre in the 

 pole timber and small saw timber size class in 

 Table 2. Generally, if the average diameter of 

 the tree trunks (measured at breast height or 

 4V2 ft. from the ground) is at the lower end 

 of the diameter range, the low volume line 

 should be used in the volume table. However, the 

 height of the tree also effects the volume range 

 and only experience will sharpen the assessor's 

 judgment in this respect. 



As a further guide to the assessor, it is worth 

 noting that except for Menomonee County there 

 is very little large saw timber found in Wis- 

 consin. 



90 



