602 
Notes. 
have set all doubt on this point at rest. Both specimens are in a 
first-class state of preservation. 
The first of the two specimens was collected in March last, and 
is now in the possession of Dr. D. H. Scott ; it shows a series of 
twenty-four sections cut transversely. The series runs through two 
internodes ; the first shows the leaf-trace just about to leave the 
periderm, and the stele is commencing to take a crescent-like form 
on the opposite side to that of the leaf-stalk which is being given off, 
and so on till the stele of the branch and stem are completely 
separated, and till the second leaf-stalk is given off. There are also 
several roots given off, which dichotomize immediately after leaving 
the cortex. 
In the above stem there are a series of four double leaf-trace 
bundles. The entire diameter of the stem is three-quarters of an 
inch, and it was about three inches long. 
The last specimen I have discovered is also from Dulesgate, from 
a mass of small nodules, one part of which contained a quantity of 
foliage, broken pieces of Sigillarian bark, Rachiopteris bibractensis , 
and various other fragments. 
In this there is a series of five leaf-trace bundles. This was about 
ij- inch in diameter and about four inches long. 
The stem is not quite whole ; a portion of one side is missing, but 
the development of the branch is seen quite perfectly. 
The above two specimens show that Lyginodendron had a branch- 
ing stem ; also that the branch was given off in the one case between 
two leaf-stalks and in close proximity to several roots. This shows 
that it has been a plant of considerable growth. 
The position of the roots also shows they must have been aerial 
roots, and not, as generally accepted, basal or confined to the basal 
regions of the stem. 
There is one other point we want to make clear, and that is the 
generative organs of the plant. So far they have escaped our notice, 
but I expect that we may before very long be in a position to state 
definitely what were the fructificative or the regenerative organs of 
these most interesting fossil plants. 
The detailed description of the above specimen is left in the hands 
of Dr. D. H. Scott. 
Bolton. 
JAMES LOMAX. 
