2 IjEXEKAL notioxs. 



growing up, yield produce of minor importance, which we will desig- 

 nate the Accessory^ Produce of the Working Circle. 



la foresters' parlance, we thus include under the name of 

 PRINCIPAL PRODUCE the timber obtained from the series of Repro- 

 duction or Regeneration Fellings, and usuallj' also windfalls and 

 dead standing trees ; while the ACCESSORY produce comprises all 

 the wood cut in the thinnings and weedtngs, or, speaking in general 

 terms, in the Improvement Cuttings. 



In high forests worked by the Natural Method, the yield of 

 principal produce is expressed in cubic measurement. With equal 

 areas exploited annually, the quantity of material obtained would 

 often differ vei-y considerably from year to year, while it would • 

 besides be impossible to predict, within several years, the date of 

 the appearance and establishment of the new generation of seed- 

 lings, for the favourable development of which the number of the 

 reserved trees acting as nurses must vary from point to point, 

 according to the quantity of light required. Every attempt 

 hitherto made to fix the yield of high forests by area has ended in 

 unsatisfactory and, often, even disastrous results. On the other 

 hand, it is expedient to base the yield of the accessory produce of a 

 Working Circle on area, and not on cubical contents. The advan- 

 tages attaching to this procedure are many ; it is more simple, it is 

 the surest means of securing the return everywhere of the thinning 

 operations at the right time ; it is the only way of preserving for 

 these operations their essential character of Improvement Cuttings, 

 since it leaves to the executive officer complete liberty of action as 

 to the quantity to exploit, his on'/ pre-occupatiou being how best to 

 improve the growth of the forest. 



The Working Scheme must satisfy several essential conditions. 

 In the first place, it must, as far as is practicable, be so drawn up 

 that each compartment may reach its turn for regeneration more or 

 less near the age fixed for the exploitability of the forest. It must, 



1.) This class of produce, accessory both from the Sylviculturist's and Ame- 

 nagiste's poiuts of view, must uot be confounded with the class of produce 

 termed also acccssoZi-e in official language. This hitter word i.s used for produce 

 whether ligneous or otherwise, derived from communal forests, and which are 

 not liable to the Government charge of 5 per cent, for cost of adminis- 

 tration. In the state forests such produce is termed minor produce. 



