Periodical Literature 631 



by using the same form factor. The influence of chmate, to be 

 sure, is expressed in the stand height, and on this height the form 

 factor depends, hence the stands grown slowly in the far North 

 at the same age have a higher form factor, they are more cylindrical, 

 but two stands in different climate which at the same age have the 

 same height, have approximately the same form factor or taper. 



An investigation into the cross-section area progress reveals the 

 same condition. The whole investigation permits the claim that 

 the same yield table based on height relation may be used in all 

 climatic conditions. 



A comparison of spruce yield tables has given the same result. 

 Especially for site classification the author believes this procedure 

 of using the index heights will prove most welcome. 



Etnheitliche Schdlzungstafel fiir Kiefer. Zeitschrift fur Forst- u. Jagdwesen 

 June, 1914, pp. 325-342. 



Honlinger explains, in replying to a criti- 



Practical cism on his book of this title, the difference 



Forest of his way of calculating from that of the 



Valuation soil rent theory'-, which lies mainly in the 



manner of charging expenses; the soil rent 



theory charging expenses only against soil, and hence coming 



occasionally to a negative soil rent, while Honlinger distributes 



expenses against soil and stock. 



The fundamental formulae of the two theories compare as 

 follows, for forest- soil- and stock value of the ideal management 

 class : 



Soil rent theorv^ : F = — ; Sr = :; r^ ; St = — -— 



.op ' \.op''—l' .op l.op"—! 



TT- 1- 77 Yr-ra <-. r(Yr — ra) „ Yr — ra r{Yr — ra) 



Honlinger : F = ; Sr = —. — r- ; oi = z — r- 



^ .op l.op"^—! .op l.op'^—1 



Centralblatt fur das gesammte Forstwesen, December, 1913, p. 564. 



Glaser points out that values are, in 



Approximating general, always compromises or averages of 



Soil subjective opinions. The average of these 



Values opinions may be considered as the average 



value of the object, or the general basis on 



which the price is fixed by the exchangers. Hence, to find simple 



