MEASUREMENT OF LOGS AND OTHER FOREST PRODUCTS 115 



on the length, diameter, form, species and degree of dryness of 

 the sticks.^ 



(i) Length of Sticks. — Since sticks are never entirely smooth 

 or straight there are always spaces between them when they 

 are piled. The amount of air space increases in proportion to 

 the length of the sticks. Thus, assuming a 4-foot stick as stand- 

 ard, i-foot sticks show an increase in solid volume of 8.3 per 

 cent, while 6-foot sticks show a decrease of 5.5 per cent. 



INTERDEPENDENCE OF THE STICK LENGTH AND THE VOL- 

 UME OF SOLID WOOD PER 128 CUBIC FEET OF SPACED 



Muller, Udo: Lehrbuch der Holzmesskunde, Leipzig, IQ02 



(2) Diameter of Sticks. — The smaller the diameter of the 

 sticks, the greater the number of pieces per cord and likewise the 

 more air space; therefore, the solid cubic contents are less. 



SOLID CUBIC FEET PER STANDARD CORD FOR STICKS OF 

 DIFFERENT DIAMETERS i 



' Baur, Franz Adolf Gregor: Untersuchungen Uber den festgehalt und das gewicht des schicht- 

 holzes und der rinde; ausgefuhrt vor dem Vereine deutscher forstliche Versuchsanstatten, Augsburg, 

 i87g. 



^ For a detailed discussion see Factors Influencing the Volume of Wood in the 

 Cord, by Raphael Zon, Forestry Quarterly, Vol. I, pp. 126-133. The tables on 

 pages lis and 116 are taken from this article. 



