JUDEICH'S METHOD. 335 



The quantity of intermediate yields is best estimated accord- 

 ing to past local experience, with due consideration to the 

 condition of the several woods. Where the necessary local 

 data are not available, the most suitable average data obtained 

 elsewhere must be used. The woods to be cleaned and thinned 

 are put down according to their areas. 



The question, whether the regulation of the yield should 

 refer to the final cuttings only, or include the intermediate 

 cuttings, has been much discussed. There can be no doubt 

 that the systematic working of a forest should, in the first 

 place, be regulated by the final cuttings. At the same time 

 the intermediate }delds may be utilized to equalize any un- 

 avoidable inequalities of the final yield. Under any circum- 

 stances both classes of yields must be estimated so as to 

 ascertain the probable quantities of produce which will be 

 placed upon the market, and to prepare the annual budgets. 



d. Separation of Yield into Classes of Produce. 



The yield should be separated according to classes of pro- 

 duce, as it is brought into the market, say as timber and 

 firewood, or large timber, poles, mining props, fagots, etc., 

 each being given in solid cubic feet. This separation should 

 be based upon locally obtained proportional figures. 



It is also desirable to give the yield of the important species 

 separately, as for instance oak, other broad leaved species, 

 larch, other conifers, etc. In India, teak, sal, deodar, and 

 some other valuable species, should always be given separately. 



2. Application of the Method to other Sylvicultural Systems, 

 a. Coppice. 



In the first place the rotation must be determined. By 

 dividing the total area (real or reduced) by the rotation, the 

 size of the annual coupe is obtained. 



Next the area is divided into as many coupes as the rotation 

 contains years, taking into consideration all matters influencing 



