48 FORESTRY OF NORWAY. 
itself as a bush in shrub form, and from 3 feet to 6 feet 
6 inches in height; but in certain plains up to Selbo, in 
the perfecture of Sondre Drontheim, it assums a fine 
conical form, and the proportions of a tree; and it attains 
to a height of 12 metres, or 40 feet. It is found every- 
where up to the North Cape. It climbs up the moun- 
tains, passing the limits of the birch, and attains, like 
some of the osiers, an altitude of 1500 metres above the 
level of the sea, 
The following are the various times of the flowering of 
trees and arborescent shrubs reared in the environs of 
Christiana, 59° 55’ N., 10° 50’ E. of Greenwich :— 
Alnus incana, J.C. ... April 6-10 ; Syringa vulgaris, L. ... June 2- 6 
‘orylus avellana, L.... 4, 6-10 | —— chinensis Willd .... ,, 10-14 
Salix Caprea, L. ++ 9, 22-30 | Juniperuscommunus,L, ,, 4- 8 
Ulmus montana, L. ... May 4- 8 | Crategus, sanggin.Pall. ,, 4-8 
Betula glutinosa,Wallr. ,, 14-18 | —~—— sacantha,L. ,, 14-18 
Acer Platanoides, L..... ,, 14-18 | Rhamus cathartica, L. ,, 8-12 
Larix Europea, C. ... ,, 20-24 Frangula, L. ,, 8-12 
Quercus pedunculata... ,, 24-30 | Cytisus alpinus, Mell. », 14-18 
Pinus sylvestris, L. ... 5, 24-80 | Rosa canina, L. ... «1 4) 18-22 
Abies excelsior, D.C.... ,, 24-381 | —— rubiginosa, L. ... ,, 26-30 
Fracxinus excelsior,L.... June 1- 4 | Robinca pseudo-acacia ,, 26-30 
Mi sculus Hippocastanum,L.,, 1- 4 | Sambucus nigra, L. ... July 1- 4 
Sorbus aucuparia, L.... ,, 2-6 | Ligustrum vulgare, L. » 48 
— hybrida, L. we oy7 4&8 | Tiliaparvifolia, brn... ,, 8-12 
The forests in Norway, according to a statement by 
M. F. L. Marny, in a volume treating of the forests of 
Europe, are extensive; but they are to a great extent 
suspended along the Scandinavian Alps, which separate 
this country from Sweden. The birch reaches there an 
altitude of 365 metres. In the diocese of Bergen the fir 
has still the gigantic proportions seen in the forests of Swit- 
zerland and Germany ; but more to the north its size is 
diminished to stunted proportions, and at the Polar Circle 
it has totally disappeared; whilst in Swedish Lapland it 
advances yet to two degrees beyond this. In Norway 
the birch serves as a ladder to vegetation; it is the 
measure/of its energy, and marks by the different states 
