56 
overlying clay, as they would be very helpful towards 
determining the species. If a conjecture might be hazarded 
from the nature of the fragments examined as to the parti- 
cular plant of which they formed a part, I should refer 
them to some species of Betula (birch). 
There was a single piece of woody matter looking like 
the rhizome of a fern, but the presence of scalariform tissue 
failed to be detected in it, and the fragment was too small 
to draw a definite conclusion from. 
Intermixed with the stems referred to above are the 
leaves of some cryptogamous plant, like those of a Hypnum, 
and formed of square-shaped transparent cells; and em- 
bedded in the earthy portions which make up the remainder 
of the mass are a few well preserved thread-like roots, 
which are white in colour, cylindrical in shape, only slightly 
branched, and containing well defined vessels. 
