PRODUCTION OF LUMBER, LATH, AND SHINGLES IN 1918. 17 



mills reporting, the quantity reported cut, the proportion of the total 

 reported cut, the average value per thousand feet f . o. b. mill, and the 

 computed total cut. The average values given in the tables are the 

 weighted averages of about 50 per cent of the 14,753 mills which re- 

 ported their cut, and accurately reflect the true value of the several 

 species of lumber at the mill. The variation in values for the same 

 wood in different States is caused by character of timber, type of 

 manufacture, and distance from market. 



BILLIONS OF BOARD FEET 

 23456789 



YELLOW PINE 

 DOUGLAS FIR 

 WHITE PINE 



OAK 



HEMLOCK 



WESTERN YELLOW PINE 



SPRUCE 



MAPLE 



GUM 



CYPRESS 



REDWOOD 



CHESTNUT 



BIRCH 



LARCH 



BEECH 



YELLOW POPLAR 



CEDAR 



TUPELO 



WHITE FIR 



BASSWOQD 



ELM 



COTTONWOOD 



ASH 



SUGAR PINE 



HICKORY 



WALNUT 



BALSAM FIR 



SYCAMORE 



LODGEPOLE PINE 

 MINOR SPECIES-- 



_. 



Fig. 3.— Computed total lumber production in 1918, by kinds of wood. 



The question is frequently asked in connection with lumber produc- 

 tion figures as to what part shortleaf pine forms of the total quantity 

 of yellow pine reported, or the ratio of white oak cut to the total. It 

 is not practicable in the lumber census work to do more than group 

 the figures for all of the yellow pines together, and treat the oaks, 

 gums, cedars, and other woods in the same way, since no standard 

 classification is found among the lumbermen. Producers in one sec- 

 tion frequently apply a local name to a given species and only confu- 

 sion would follow an attempt to segregate the figures. 

 152823°— 20— Bull. 845 3 



