II 



F. C. KIÆR. CHRISTIANIAS MOSSER. 



tilde. 298 m above the level of the sea) 1103 mm. The distribution 

 over the months will appear from table II. 



Table II. 





Millimetres. 





Christiania 



Bjørnsjø, 





42 



84 





25 



52 



March 



27 



61 



April 



32 



61 





46 



60 









Tnl-i-r 



84 



118 



August 



95 



133 



September 



83 



126 



October 



83 



119 



November 



53 



106 



December 



34 



103 



Total during the year 



674 



1103 



From about the end of November till the end of March the 

 soil is mostly covered with snow, which renders botanical excur- 

 sions during this season altogether impracticable. In the winter 

 1865 — 1866 however I have collected mosses in December and January. 



The ground rises from the Fiord to 600 m above the level of 

 the sea (in Nordmarken). In the lower parts of the west- and 

 north-side of the Fiord and on the Islands, it is composed of 

 upper and lower Silurian rocks, consisting of limestone and clay- 

 slate in a belt, about 5 km broad. This formation is surrounded 

 at west and north by a range of hills composed of eruptive rocks 

 (granite, sienite and porphyries), covered at the foot of the hills 

 with beds of conglomerate and red sandstone. East of the 

 Fiord the country is composed of primary rocks of gneiss, mica- 

 and hornblende slate. 



