66 CIRCULAR 3 3 3, U.S. DEPARTMENT OF AGRICULTURE 



APPENDIX 



TYPICAL FIELD FORMS USED IN SAMPLE-PLOT WORK BY THE 

 UNITED STATES FOREST SERVICE 



(All forms are letter size (S by 10% inches) unless otherwise stated) 



561 Tree description. Provides for original measurement and four re- 

 measurements of a single tree. In addition to basic data like breast-height 

 diameter and height, provides for description of bole, crown, vigor, etc. Note- 

 book size. 



561B Tree descriptions. Has same headings as 561, but provides for orig- 

 inal measurement and four remeasurements of S trees, or single measurement 

 of 40 trees. 



114 Permanent sample plots — Enumeration sheet. Like 561B except that 

 the only printed headings are species, breast-height diameter, height, and 

 crown class. 



279 Physical survey. Provides for detailed description of a plot or observa- 

 tion point under these headings : Topographic features, forest environment, 

 soil character, and moisture supply. Space on reverse for sketch map and 

 additional notes. 



