UNITS OF LOG MEASURE. 11 
The first volume comprises rules for finding the contents of Icgs 
and standing trees, methods of estimating timber, a brief outline 
of forest working plans, and a description of instruments useful in 
the woods. 
It is the intention of the author to include in the second y ocae 
directions for studying the growth of trees, tables of growth, as far 
as the growth of American trees has been studied, directions for 
the study of the future production of forests, tables showing the 
future yield of forests, and miscellaneous tables of value to woods- 
men. 
If any of the users of the Handbook know of American rules or 
tables for measuring timber which have not been included or men- 
tioned in this volume, the author would regard it as a favor to 
have his attention called to them. 
UNITS OF LOG MEASURE. 
In the United States and Canada logs are most commonly meas- 
ured in board feet. Firewood and wood cut into short bolts, such 
as small pulpwood, excelsior wood, etc., are usually measured in 
cords. In the Adirondack Mountains the 19-inch standard, or, as 
it is often called, ‘‘the market,’’ is a common unit of log measure. 
In some localities a log 22 inches in diameter at the small end 
and 13 feet long is used as a standard log and is the unit for buy- 
ing and selling timber. In other sections standards are used which 
are based on logs 12 feet long and respectively 21, 22, and 24 
inches in diameter at the small end inside the bark, as explained 
in a later chapter. 
In some eases logs are measured in cubic feet. This is common 
with long spar timber and with long logs to be cut or hewn square. 
in many localities timber is sold by the log or tree, and in some 
sections standing timber is sold for a specified amount per acre or 
other unit of land measure. Piles and mine props are usually 
sold by the piece or by the lineal foot. Logs are occasionally 
sold by the ton. 
