1890.] Mr A. C. Seward,' On Lomatophloios macrolepidotus. 47 



Further on 1 , he speaks of the very frequent occurrence, in 

 remains of Lepidodendroid plants, of simply the epidermal layer 

 and the semi-fibrous portion of the prosenchymatous one; all the 

 inner tissues having been loosened by decay and eventually floated 

 out: when the stems were prostrated, this epidermal and bast 

 layer constituted the cylinder whose two sides were eventually 

 brought together and flattened by superimposed pressure. In 

 another place 2 , a full description is given by the same author of 

 a specimen which was apparently very similar to that now under 

 consideration ; the following are Prof. Williamson's words : — " I 

 have before me at the present moment a section of a large Lepi- 

 dodendron of which the woody axis and its medullary centre have 

 disappeared, the thick cortical layer alone remaining. A large 

 Stigmarian root has found its way into the cavity and filled it up, 

 giving off its peculiar rootlets within the Lepidodendron cylinder. 

 Such a specimen would inevitably mislead even a botanist whose 

 eye was not familiar with the appearances of the two plants." 



1 Ibid. p. 228. 2 Ibid. p. 215. 



EXPLANATION OF PLATE III. 



Illustrating Mr A. 0. Seward's paper " Notes on Lomatophloios 

 macrolepidotus (Goldg.)." 



Fig. 1. Section taken at right angles to the surface of Lomatophloios 

 macrolepidotus, i. e. at right angles to the leaf -bases. Actual 

 width of section 3*5 cm. 



a. Position of (?) Coprolites. 



b. Stigmarian rootlets. 



c. One of the leaf-bases with space containing two 



Stigmarian rootlets. 



Fig. 2. Part of the upper end of fig. 1 magnified. Corresponding 

 parts shewn by the lettering in figs. 1 and 2. 



Fig. 3. Outline of the specimen (Lomatophloios macrolepidotus). 



ab = 18 cm. 

 cd= 13 cm. 



The section shewn in fig. 1 is taken from that part 

 indicated by **. 



Fig. 4. A few of the leaf-bases {~ natural size), shewing leaf-scars s, 

 and small indentations i on the swollen leaf-bases. 



The whole of both surfaces of fig. 3 are covered with such leaf-bases. 



