PUBLICATIONS 



OF 



The Minnesota State Forestry Board. 



BULLETIN NUMBER 2. 

 Issued from the office of the Secretary, St. Paul, Minn., November, 1903. 



MBMBBRS OF MINNESOTA STATE FORESTRY BOARD. 



S. M. Owen, Pres., Minneapolis. O. M, I,ord, Minnesota City. 



C. C. Andrews, Sec, St. Paul. Frank H. Murray, St. Paul. 



(Ex-officio as Chief Fire Warden.) p. Weyerhaeuser, St. Paul. 



John Cooper, St. Cloud. M. M. Williams, tittle Falls. 



Samuel B. Green, St. Anthony Park. > A. C. Wedge, Albert I,ea. 



{Ex-qjfficio as Horticulturist State University.) 



VOLUME TABLES FOR WHITE SPRUCE AND OTHER 



TREES. 



BY T. D. DUNCAN. 



Settlers and others in Northern Minnesota have found con- 

 siderable difficulty in securing accurate estimates of the standing 

 timber on their lands. This is due mainly to the inexperience 

 of most persons in making ocular estimates, and much to their 

 lack of knowledge of simple mathematical methods of approxi- 

 mating the merchantable contents of standing trees. They have 

 been compelled, to their disadvantage, to rely on the "guess" of 

 professional estimators who are oftentimes influenced as buyer 

 or locator to lend color to the estimates to their own benefit. 

 Foresters, recognizing the volume table of mathematical con- 

 struction as a necessary adjunct in the pursuit of their profession, 

 have devised various forms of it for practical use and various 

 ways for their preparation, and to the inexperienced person such 

 tables should render some assistance. 



Where great accuracy is desired special tables should be pre- 

 pared for each species of tree and for each quality of locality, but 

 general tables for each species of a district may be prepared that 

 will readily, and more accurately, take the place of the eye of 



