540 MR ROBERT KIDSTON ON 
General Description of Specimen.—The specimen was contained in one of the well- 
known coal balls from the Halifax Hard bed near Huddersfield, Yorkshire (Lower Coal 
Measures), and was found by Mr W. Hemineway, by whom it was communicated to me, 
and to whom my thanks are due for the opportunity of describing the specimen. 
Through a fortunate fracture in the stone, part of the outer surface of the specimen 
was exposed, showing a well-preserved row of leaf scars. This surface of the specimen 
is shown natural size at fig. 1, Pl. I, and enlarged two times at fig. 2. 
With the exception of the row of leaf scars, the remainder of the surface of the 
specimen exposes the layer which lies immediately underneath that on which the leaf 
cushions sit. Its surface shows the leaf traces surrounded below by the parichnos, 
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Texr Fic. 1.—Sigillaria elegans, Sternberg, sp. 
A. Transverse section of the specimen showing the vascular cylinder and portion of the cortex. The ribs are 
numbered I. to XIX. x 4. 
B, Transverse section of the vascular cylinder. The furrows on outer margin of primary wood are numbered 1 to 28, 
x9. Protoxylem, pra. Primary xylem, 2’. Secondary xylem, x”. Leaf traces are shown in the furrows 
marked with a x. Slide No. 964, 
which form a semicircle, Pl. I. fig. 2. At this point the parichnos do not seem to com- 
pletely surround the leaf trace. Between the narrow ridges on which the leaf trace scars 
are seen, the exposed surface is striated with close, slightly flexuous longitudinal ridges. 
An outline sketch of a transverse section of the specimen is shown at text fig. 1, 
A, enlarged four times. Towards the right is seen the vascular cylinder, the two sides of 
which are pressed together, and only a small part of the pith-cavity is seen. 
