Bulandets og Værlandets konglomerat og sandstensfelt. 25 
The constitution of the conglomerates differs somewhat in 
different places. Among the pebbles, occurring most frequently, 
may be mentioned: reddish and greyish granites, syenite, quart- 
zite, saussurite gabbro as well as dark hornblende rocks. As 
a rule, the pebbles are roundish angular; quite rounded and 
angular pebbles are found, but they do not occur frequently. 
They differ in size, some being about 0.5 m., the greatest part 
about 0.1 m. 
The cement is partly greenish, partly reddish, in some 
cases it is rather imperceptible. 
The sandstones vary somewhat both in regard to size of 
grain, mineralogical composition and quality of cement. The 
form of each particular grain often differs somewhat. 
As to the size of the grain we find all transitional stages 
from gravel to fine-grained sandstones. By regarding fig. 16, 
17 and 18 we get a strong impression of the great variety in 
regard to the sizes of the grains. 
The mineralogical composition varies somewhat in diffe- 
rent places. Quartz is the mineral which occurs most frequently, 
but we also find considerable feldspar, plagioclase, microper- 
thite as well as ortoclase. Among other minerals we can 
mention: epidote, sericite chlorite, calcite, magnetite, zirkon 
and titanite. 
-The cement is chiefly greenish, but reddish sandstones 
appear too. The greenish colour is due to glauconite, the 
reddish to ferruginous sediments. 
Regarding the form of the grains we perceive that the 
erains partly are angular, partly roundish angular, whereas 
we find no grains which may be designated os conglobate. 
Thus we find the very same forms among the grains of the 
sandstones as we have found among the pebbles of the conglo- 
merates. The form of the sand grains denotes that the sand- 
stones have been formed by deposition in water, this being in 
good accordance with finds made of alternate strata of sand- 
stones and conglomerates, and with the distinct stratification 
within the sandstones. 
In a bay on Lamholmen I have found numerous remains 
of fossil plants in these sandstones. Professor Nathorst who 
got the collected material for study, came to the result that 
