PLATE XXIX. 



Graphic repiBsentntion for the agreement between the ciuves from 

 tke equations and those from the Yield laWe for Spruce stund, 

 winstruttcd by Dr A. SchwappocKin thi locali'y o( southern, port m 

 Germany. 



Graphic representation tor the agreement between the curves tram 

 the equations ond these from the Yield table for Spruce stand, 

 constructed by Dr. A.Schwoppach, in the localities of middle and nor- 

 thern ports in Germonjf 



A,, 



it (,'s « 100 't' ^ « *» "5 ^™ "" 



» An 



