150 Scientific Intelligence. 
the coast near Tromsé, and figs. 2,3, 4 give sections at three 
i i ken as typical. 
31°6 and 35:4 meters above the mean sea surface (in the figures 
the heights are given in Norwegian fect); the lowest has a maxi- 
mum breadth of 19 meters. Fig. 3 is a section at a point between 
Sandvik and Grepstad, where the three levels are 14°5, 84:1 and 
38°5 meters. Fig. 4 represnts a section at Grepstad where there 
are only two levels, namely, 14°5 and 38°4 meters. 
2. 3. 4. 
Sandvik Grepstad Grepstad 
ES ee 
Se eae mee 
va 
It is concluded, in the first place, that the terraces and “ strand- 
linien” do not, taken as a whole, follow definite levels. Some of 
them are local and are observed only for short distances, while 
others extend along for many miles. The latter are more typi- 
ev 
ed as such for long distances in Northern Norway. The 
formation of these was probably in part determined by periodic 
changes in climate. The course of any particular line is nearly 
horizontal, whether it runs parallel with the coast, or extends from 
the coast into the interior, although the highest levels are found 
in the interior of the fiords. The conclusion of Bravais (1842) 
while the land rose slowly in reference to the surface of the sea. 
pparent elevation of the land is regarded as having gone on 
gradually and slowly and not suddenly and interruptedly. 4n 
general these changes in level which went on along the coast of 
northern Norway during the post-glacial time are believed to be 
ee easily explained by the supposition of a changing level of 
the sea, 
2. On the substances obtained from some “Forts vitrifiés” in 
France.—M. Dauertr has made a critical mineralogical an 
