YORKSHIRE NATURALISTS UNION. 
Hor.— Barnsley Thick Coal. Locs.—Monckton Main 
Colliery, near Barnsley ; Ackton Main Colliery, Feather- 
stone. 
Hor.—//aigh Moor Coal. Loc.—Featherstone Main 
Colliery, near Pontefract. 
Hor.—Shale over Chevet Rock, \.oc.—Cadeby Colliery, 
Conisborough. 
REMARKS.—A careful examination of the Coal Mea- 
sure Lepidodendra since the first Report was handed in, 
has shewn me that the specimens placed under LZepido- 
dendron dichotomum in my first Report are referable to 
Lepidodendron lycopodioides Sternb. Since the first Report 
was completed, I have elsewhere stated my difficulty in 
ascertaining the critical characters for the identification of 
Lepidodendron dichotomum Sternb. (in part), (= Lepido- 
dendron sternbergit Brongt.) (See Proc. Roy. Phys. Soc. 
Edin., vol. x., p. 350, 1891.) 
Zeiller figures a Zepidodendron which he believes to 
be the Zepidodendron dichotomum of Sternberg (Veget. 
foss. d. terr. houil., p. 107, pl. clxxii., fig. r; Flore foss. d. 
bassia houd d. Valen. 5 449, DL. Dum e, 1) This 
plant I know, and it occurs in Britain, but it is very rare, 
and hitherto I have only seen it in the Upper Coal Mea- 
sures, and with it none of the Yorkshire examples agree. 
Should Zeiller be right in the identification of his speci- 
mens, the specific position of Lepidodendron dichotomum 
would be very clear, but I am doubtful of the correctness 
of the identification of his specimens with Sternberg’s 
species, and I do not think that the figure given by Presl 
(in Sternberg., Vers. ii, p. 177; pl. Ixviii, fig. 1) at all 
settles the point, for, firstly, I am not aware on what 
grounds Presl so identifies his specimen, which appears to 
me different from Sternberg’s somewhat unsatisfactory 
Geol. Trans, Y.N.U., 1893. 
