FOREST ADMINISTRATION. 143 



country, and of any one forest in particular, the treat- 

 ment to which they in general, or it in particular, should 

 be subjected with a view to their fullest development, are 

 the rates of increase or of growth of the trees at different 

 ages. Attention was given to this subject in Finland so 

 early as 1829, and an endeavour to obtain such data was 

 made by Mr C. C. Bocker, who published in that year a 

 prize essay, entitled Skogars Skotoel i Norden, Forest Con- 

 servation in the North. The subject was again brought 

 forward by Staats-rath C. W. Gylden in the year 1853, in 

 his treatise Handledning for Skogs Hushcillare i Finland, 

 Treatise on the Forest Economy of Finland ; and in this 

 tabulated statements of the growth of trees are given. 



And in 1867 the Forest Administration of Finland 

 submitted to the consideration of the Imperial Senate the 

 importance, with a view to the development of the forest 

 economy of the country, of this being thoroughly investi- 

 gated and accurately ascertained in regard to the more 

 important of the trees growing in all the districts into 

 which it is divided. In the subsequent session the 

 means of meeting the expense of such an enquiry were 

 granted. The work was entrusted to Professor A. G. 

 Blomqvist, the present Director of the Evois Forest 

 Institute, whose report entitled Tabeller framstdllande 

 utvecklingen af jemnaoriga och slutna skogs-bestand af tall 

 gran och byork. EnligJit uppdrag af Forst-strylensen i 

 Finland, &c., Tables representing the bulk of pine, spruce, 

 and birch, at different ages in different climatal circum- 

 stances, with a sketch of the forest management in Finland, 

 was printed in 1872. 



In view of the advanced system of forest management 

 devised by Hartig and Cotta, the measurements were to be 

 made, and the tables prepared, in accordance with the 

 usages of their disciples ; and instructions were forwarded 

 to the forest officials from the Forest Administration at 

 Helsingfors, under date 6th July 1867. For the purpose 

 of this investigation, Finland was divided into three zones, 

 South Finland, including all from the south coast to lat. 



