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 1 3 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. 



