82 FOREST commissioner's REPORT. 



INSTRUCTIONS FOR MEASUREMENTS OF ACRE-YIELD. 



1. Select the best covered piece of land. 



2. Stake off one acre, preferably in the form of a square (70 by 70 yards) with 

 lines running N. and S., E. and W. 



3. Stretch a cord or string along the east side of the piece; then divide off a 

 strip about 21 feet wide with another string so that the strip lies between the twa 

 strings and extends S.and N. along the east line. This is to prevent repetition of 

 measurements. 



4. Count, measure, and record all the trees of this stri)) in the manner described 

 below; then divide off another strip by removing the first (outer) cord, placing 

 it 21 feet to the westward of the second line cord which is left in place, and count 

 and measure. Continue thus until the trees of entire acre are measured. 



5. The record is kej^t on furnished blank sheets as per sample, and arranges the 

 data for the various trees in nine classes according to their iliameter (diameter- 

 classes) and six classes according to their total height (height-classes). 



6. The record alsoincludes: Diameter (measured 4 feet from ground) and length 

 of the merchantable timber of each tree large enough to furnish lumber (esti- 

 mated). 



7. For each strip use a separate sheet or sheets. 



8. The record for each species is kept separate. 



9. After finishing a strip, and before beginning another, fill out the blanks on 

 the back of the sheet by underscoring or adding descriptive w(n-ds. 



10. Fill out a special "folder" (.furnished), giving description of the region. 



11. Describe more in detail the Tneasured area as regards topography, soil, 

 drainage, and cover, if possible adding a sketch map of the acre and the manner 

 of its subdivision in sti'ips. 



1. Openings: No openings or bare places. 



2. Distribution of trees : In clusters. Smallest trees largely grouped by species. 



3. Crowns of most spruce well developed; dense. Small spruce often small 

 and crowded. 



4. Trunks of most spruce straight; clear; covered with limbs above fifteen feet 

 as a rule. Defective trees noted. 



