DR BOUE' ON THE GEOGNOSY OF GERMANY. 101 
II. Unstratified Rocks. 
The Unstratified Rocks, which appeared, among the pre- 
ceding, as subordinate masses, or immense local deposits, 
have arrested my attention during this journey ; and I be- 
Heve we are yet very far from knowing, either their origin, 
or their true geognostic position. 
Granite appears to me to exist in the primitive class of 
rocks, in great hills or domes, and in veins ; of the latter 
of which, some are in connection with those great bodies 
of granite constituting mountains ; others are isolated in 
the gneiss or mica-slate, in the same manner as the basaltic 
veins or dikes are in chalk and other rocks. In the great 
track of primitive schistose rocks of the Scandinavian pe- 
ninsula, the granite is confined to the gneiss and mica- 
slate. 
In clay- slate rocks, the granites often occur under the 
form of syenite, and even of syenitic porphyry, their posi- 
tion being the same as that of the granites in gneiss and 
mica-slate. I have only to observe, that the various sye- 
nitic porphyries are pretty frequent in veins or dikes. To 
these granites belong some syenites in the clay-slate forma- 
tion between the northern part of Transylvania and Hun- 
garia, perhaps the syenite near Schemnitz, the granites of 
the Frankenwald, of the Cotentin, and probably many 
granites of Cornwall and Brittany. 
Those granites, which are undoubtedly newer than 
greywacke, are almost entirely syenites, or syenitic; at 
least, it seems probable that these rocks are newer than 
the granites which we find in the clay-slate districts. 
One of the best examples of this class of syenites and gra~ 
nites is seen in those which cover so great an extent of 
country from Meissen to Lauban, and which are now 
