50 THE THEORY AND PRACTICE OF WORKENG PLANS 



If the estimate and description are lumped for the entire area 

 of one t}'pe within the same watershed, Col. 2 would be the 

 name of the type, Col. 3 would be blank. Cols. 5 to 22 inclusive 

 would be as in the paragraph above. Cols. 23 and 26 would be 

 very general. Cols. 24 and 25 would fall away, but Cols. 28 and 29 

 would be retained. 



From the above data, a rough age-class table can, and, for 

 all methods of regulating the cut by the distribution of the age 

 classes, should be constructed. Assuming in the hx-pothetical 

 data of the general stand table above that the rotation is 160 

 years, the form of age-class table would then be as follows: 

 See Age-Class Table A. 



In the above example if only the s}Tnbols " 0," " M," and 

 " Y " are used, the comparison would be as in Age-Class 

 Table B. 



Were the intermediate steps 0/M and Y/M used also to 

 designate the approximate age of the stands, the table would 

 read as in Age-Class Table C. 



Note. — In addition to the maps and tables listed, status records are often 

 desirable. These are records showing the ownership of lands. Complete status 

 records will show in detail the chain of title for each parcel of land and also all 

 servntudes and easements attaching to the land. In addition, they usually show 

 the location and extent of all qualified or temporary alienations such as unpatented 

 mineral claims, leased areas, or lands otherwise specificalh' under permit or 

 affected by outstanding contracts, as for the sale of timber, etc. Status records 

 usually consist of sets of maps, often called " tract books," and of written or 

 tabulated records supplemental to the map records. 



