THE WINDFALL PROBLEM 843 



case ; whether they are tall or short, big or small-crowned, spaced 

 singly or in groups, in deep or shallow soil, on ridges, slopes, or flats. 

 From the windfall history studies in the remaining stands of private 

 cuttings up to 25 years old, it has been learned that although 25 per 

 cent may ultimately be lost, the loss is concentrated in the first half 

 dozen years after cutting and thereafter becomes less and less with 

 the increasing windfirmness of the remaining trees, until it is almost 

 inappreciable at the end of this period of time. The most important 

 considerations in the final solution of the problem in our yellow-pine 

 cutting practice, created by these apparently regular storms, are: (1) 

 the periodicity of these storms, (2) their regional habit and extent, 

 (3) the location of susceptible areas, (4) the minimum stand that can 

 be left which will sufifer the minimum ultimate loss. 



With regard specifically to the storms of 1915 and 1918 on the 

 Crater Forest, nothing could be ascertained about periodicity or any 

 of the vital points above mentioned which would indicate a practicable 

 variation in cutting to obviate future windfall loss. While this is to 

 be regretted in any case, the importance is not so great here, because 

 this particular locality is now practically cut out as a timber sale unit. 



