FOREST ADMINISTRATION. 143 
country, and of any one forest in particular, the treat- 
ment 10 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. Bicker, who published in that year a 
prize essay, entitled Skogars Skétoel i Norden; Forest Con- 
servation in the North. The subject was again brought 
forward by Staats-rath C. W. Gylden in the year 1858, in 
bis treatise Handledning for Skogs Hushillare 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 thé 
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 byérk. Enlight uppdrag af Forst-strylensen 7 
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, 
