THE NEW YORK STANDARD RULE 
147 
surface or diameter, and he recommends that it be allowed 
for by making a comparison between the scale and mill 
product, and then adjusting the zero mark on the scale 
stick more than one inch from the inch mark on the stick 
in accordance with the results of that comparison. Dr. 
Clarke’s rule will be found on page 254 in the same section 
with the other board rules. 
SECTION V 
THE NEW YORK STANDARD RULE 
In northern New York logs are cut as a rule 13 feet long, 
and a log of that length and 19 inches in diameter at the 
top, inside bark, is the common unit of log measure¬ 
ment. It is called a “ market ” or “ standard ,” and logs 
of other dimensions are valued in proportion. 
The “ standard ” is thus another artificial unit of log 
measurement, more artificial, perhaps, than any other here 
dealt with. Standard measure in logs of the same length 
runs very close to cubic measure. Thus a log 19 inches in 
diameter at the top and 13 feet long has 26 cubic feet in it; 
four logs 9j inches in diameter and 13 feet long, also 
making one standard, contain the same amount of wood 
approximately, while a 38-inch log of the same length has 
four standards and 104 cubic feet of contents. A log 26 
feet long, however, has more than twice the wood contents 
of a 13-foot log on account of taper. For that reason the 
use of standard measure outside of a region where short 
standard lengths are cut would be likely to make trouble. 
Standard measure does not run parallel to board measure 
or to the yield of logs of different sizes at the saw. The 
standard log,—a log, that is to say, 19 inches in top diameter 
and 13 feet long, — scales by the Scribner rule 195 feet, and, 
in practice, five standards are often reckoned as the equiv¬ 
alent of a thousand. Four 9^-inch logs, together making 
one standard, scale but 144 feet by the rule, or seven stand¬ 
ards to the thousand, and the actual ratio between stand¬ 
ards and thousands is stated to run all the way from 4 
to 14. 
