UNUSED AND OBSOLETE LOG RULES 85 



rule as will ever be required in commerce. This rule is especially valu- 

 able for logs below 12 inches and above 28 inches, in which classes the 

 Scribner rule is defective. There is nothing to be gained by further 

 efforts to construct new " perfect " log rules. 



79. Unused and Obsolete Log Rules. In addition to the rules described in 

 this chapter we may mention the following rules, all of which are now obsolete. 



Bangor Rule. Synonyms: Miller, Penobscot. The Bangor Rule was constructed 

 from diagrams, and gives slightly higher and more consistent values than the Maine 

 rule. It shows more care in construction and is probably the best of the diagram 

 rules. Owing to the more extensive use of the Maine rule, this rule is ahnost obsolete. 



Parson's Rule. This rule is of similar construction to the Bangor and Maine 

 rules and its values are almost identical but a little below the Maine rule. The 

 difference is about 2 per cent. It is a local rule, still used to some extent. 



Boynton Rule, 1899 (Vermont, local). Made up from values taken from Scrib- 

 ner and Vermont ruies checked by mill tallies. A fair rule but of no general value. 

 D. J. Boynton, of Springfield, Vermont. 



Brubaker Rule. No detailed knowledge. 



Chapin Rule, 188.3. The most erratic of all log rules, made up apparently by 

 selecting values from existing rules to suit thfe author. 



Drew Rule, 1896. The Drew rule has been the statute log rule of the State of 

 Washington since 1898 but is used 'practically nowhere in the state. Instead, the 

 Scribner rule is universally used, except along the Columbia River, where the Spauld- 

 ing rule is in use. 



This rule (by Fred Drew, Port Gamble, Wash.) was made from diagrams checked 

 by tallies of logs as sawed. The value.? are given for diameters from 12 to 60 inches 

 and lengths of from 20 to 48 feet. Taper is not considered. The values are said 

 to have been reduced to allow for hidden defects. The rule is inconsistent in scale, 

 resembling the Doyle in tendency on large logs. Its use is practically discontinued. 



Dusenberry Rule, 183.5. This rule was made in 1835 by a Mr. May, and adopted 

 by Dusenberry-Wheeler Co., of Portville, N. Y. It was probably constructed 

 from mill tallies, and was intended to measure the output of pine sawed I5 inches 

 thick with some 1^- and 2-inch pieces. The saw kerf was Ye inch. The rule is 

 very consistent and was generally adopted in the Alleghany Waters in Penn- 

 sylvania. It is still used in that and adjoining states. Owing to the wide saw 

 kerf used, this rule under-scales Scribner from 15 to 20 per cent and is not suited 

 to pre.sent conditions. 



Favorite Rule. Synonym: Lumberman's Favorite. A diagram rule, made 

 by W. B. Judson in 1877 and published in Lumberman's Handbook, 1880, The 

 values for small logs are lower by 15 per cent than Scribner's. The rule is now 

 practically obsolete. 



Finch and Apgar Rule. Date unknown. A diagram rule, erratic, for i^-inch 

 saw kerf. Gives low values. 



Forty Five Rule. About 1870. Based on an inaccurate rule of thumb formula 

 which gives high values for small and large logs and low values between these 

 extremes. 



Herring Rule, 1871. Synonym: Beaumont. The values in the Herring rule 

 as originally made, to include from 12- to 44-inch logs, are practically identical 

 with the Dusenberry rule. The rule was applied at the small end to logs up to 

 20 feet in length. Above 20 feet a rise of 1 inch was added, and was applied at 

 middle point of logs up to 40 feet in length. Here another inch was added, and the 



