THE CARBONIFEROUS ROCKS OF CANONBIE, DUMFRIESSHIRE, ETC. 823 



Lepidodendra may possess an internal structure so similar that at present we are 

 unable to distinguish any specific difference in their structure. It is, however, much to 

 be desired that fresh material might be procured from the original Horizon of Witham's 

 Lepidodendron Harcourtii, so that a careful structural comparison might be made 

 between the Lepidodendron Harcourtii, Witham, and that described by Williamson 

 under the same name, and so to ascertain if there are not some anatomical differences. 



It has been thought by some botanists that Lepidodendron Harcourtii should, on 

 account of the ' corona ' which surrounds the outer margin of the vascular axis, be 

 classed with the Lepidophloios, as in Lepidophloios stems which have shown structure 

 this ' corona ' seems to be always present. 



Locality. — Hesley Heath, near Eothbury, Northumberland. 

 Horizon. — Carbonaceous series = Scremerston group. 



Bothrodendron, L. and H. 

 Bothrodendron Kidstoni, Weiss. 



1889. Bothrodendron Wilkianum, Kidston (pars), Ann. and Mag. Nat. Hist., ser. 6, vol. iv. p. 65, pi. iv. 



fig. 2. 

 1889. Bothrodendron Wukianum, Kidston (pars), Proc. lioij. Phys. Soe. Edin., vol. x. p. 94, pi. iv. fig. 2. 

 1893. Sigillaria (Bothrodendron) Kidstoni, AVeiss, Die Sigillarien d. preuss. Steinlc. u. Rothl. Gebiete, ii. 



Qruppe. Die Subsigillarim, p. 56, pi. xxviii. fig. 110 (Abhandl. d. Kbnigl. preuss. geol. Landesan- 



stalt, Neue Folge, Heft 2). 



Remarks. — The specimen which Weiss names Bothrodendron Kidstoni I previously 

 included with Bothrodendron Wukianum, regarding it as possibly a younger condition 

 of that species. 



It differs from Bothrodendron Wukianum in possessing a smooth bark and closer 

 leaf scars, from which two lateral lines extend downwards. I now believe I was in error 

 in regarding this specimen as a young condition of Bothrodendron Wukianum. 



The type specimen of Bothrodendron Kidstoni, Weiss, was received from the late 

 Mr Hugh Miller. 



Locality. — Little Whickhope Burn, near first branch above Cross Syke, North- 

 umberland. 



Horizon. — Well down in the Calciferous Sandstone series — Cementstone series 

 or Fell Sandstone series. 



Lepidophyllum, Brongniart. 



Lepidophyllum lanceolatum, L. and H. 



Lepidophyllum lanceolatum, L. and H. See ante, p. 756. 



Jjocality. — Yate Burn, two miles S.S. W. of High Long House, Northumberland. 

 Horizon. — Calciferous Sandstone series = Oil Shale group of Midlothian. 



