FOREST RESOURCES 



OF NORTHEASTERN FLORIDA 



Wood-Products Aspects 



•&$- 



— <&r 



the lumber which may be cut from small logs and 

 overestimates the contents of large logs. The 

 Scribner rule in general underestimates mill tally, 

 but is usually more accurate than the Doyle rule. 

 Although the International (%-inch kerf) rule is 

 not used commercially, it is of especial value in 

 that it very closely approximates actual green- 

 lumber tally and for all practical purposes may be 

 so used. The entire saw-timber volume in this 

 area as estimated by the Doyle rule is less than 60 

 percent of that shown by the International rule and 

 less than 70 percent of the Scribner-rule volume 

 (table 11). 



Table 11. — Net board-foot volume expressed in Doyle, Scribner, 

 and International {}i-inch saw kerf) log rules 



THE group of manufacturing industries pro- 

 ducing lumber and other wood products in 

 northeastern Florida has exceeded all others 

 in importance for many years. For several decades 

 after 1880 extensive railroad building made the 

 resources of the interior progressively more aces- 

 sible and,' through the development of agriculture, 

 increased the demand for wood products. From 

 1909 until 1929, lumber production in Florida ap- 

 proximated a billion feet annually. Cross-tie pro- 

 duction became second to lumber from the stand- 

 point of volume of timber used. The growth of 

 the naval-stores industry stimulated the production 

 of rosin barrels; and the increase of area devoted 

 to specialty crops made a market for fruit and vege- 

 table containers and slack barrels. 



Saw-timber Volumes 



In estimating present saw-timber volumes, only 

 live trees of commercial species were included. 

 Pine and cypress trees 9 inches and larger and hard- 

 wood trees 13 inches and larger in diameter at 

 breast height, were considered merchantable if 

 they were 50-percent sound and would produce 

 one 12-foot usable log. Usable portions of tur- 

 pentined butts are included in the inventory figures. 

 All figures are net, deductions having been made 

 for both woods and mill cull, i. e., portions of the 

 tree which could not be made into lumber on 

 account of rot, fire scars, crooks, bad knots, or 

 other defects. 



The Doyle rule has been used in the tables here- 

 with because it is commonly used in the South and 

 is the statute rule of Florida. Even though com- 

 monly used and although it approximates mill tally 

 in logs of 25 to 35 inches in diameter, it is an inac- 

 curate measure of volume in that it underestimates 



Tree species group 



Doyle rule 



Scribner 

 rule 



Interna- 

 tional rule 



Pines: 



Longleaf.. . ....-_-. 



Slash. 



Loblolly 



M board feet 



967, 500 



1, 619, 300 



717,000 



ISO, 300 



M board feet 



1, 608, 900 



2, 563. 300 

 985, 700 

 279, 100 



M board feel 

 1, 959, 500 

 3. 075. 800 

 1, 133, 800 



Other 



326, 600 







Total 



3, 484, 100 



5, 437, 000 



6, 495, 700 







Hardwoods: 



Red gum, ... _ 



395, 600 

 467, 700 

 412, 800 

 119,900 

 538, 400 



473, 900 

 585, 200 

 495, 600 

 140, 500 

 690, 800 



517, 200 



Black gum, . _ . 



677, 400 



Red oaks 



537, 500 



White oaks. .. 



151, 500 



Other... . 



761, 700 







Total 



1, 934, 400 



2, 386, 000 



2, 645, 300 









1, 154, 700 



1, 687, 400 



2, 017. 800 







All species _. _ ^ 



6, 573, 200 



9, 510, 400 



11, 158, 800 



Practically all of the forest area in northeastern 

 Florida is accessible for logging during some season 

 of the year. The excellent network of railroads 

 and highways (fig. 5) makes it possible to get within 

 a few miles of any part of it with railway cars or 

 trucks. In fact, more than 90 percent of it has been 

 logged over in the removal of the original timber. 

 Woods labor is usually plentiful at relatively low 



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