56 Forestry Quarterly. 



Methods of Regulation. 



Regulation should generally be by volume with an area check ; 

 regulation by area with a volume check is, just now, at least, 

 unnecessarily intensive for most conditions in the Southwest. 

 The two methods recommended for the present are therefore Von 

 Mantel's formula and the Austrian formula; the former to be 

 used with rough data before a detailed reconnaissance has been 

 made, and the latter when sufficient data have been secured. In 

 any case a preliminary reconnaissance is essential, for it will 

 show the method of regulation required, and from this method 

 the data needed will become known ; then, according to the data 

 required some method of field work which will secure that data 

 can be devised. 



