FEOM THE BUTTON COLLECTION. 103 



stem has been pressed flat, and both sides of it are preserved 

 in the specimen figured ; on the opposite to that which has 

 been drawn is a similar row of scars, having the same ar- 

 rangement." This slab is ten inches in length, and there are 

 four perfect circular scars and portion of two others on this 

 slab, varying from an inch and a half to an inch and a quarter 

 in diameter ; and the best preserved have a distinctly defined 

 circular depression in the centre, and indistinct lines radiating 

 from it to the margin of the disc-like scar. The impression 

 is in a carbonaceous layer on a hard matrix of gritty shale, 

 divided by thin leaves of coal. The scars are slightly raised, 

 being depressed in the Hutton drawing. The leaf-scars or 

 scales not clearly defined, but of rhomboidal shape. This 

 specimen should be carefully figured. 

 Loc— Shale above High-Main Seam, So. Shields. (H. C. 395). 



200. This specimen is from the same locality and horizon of 



the Coal-measures as the last, and is most likely a portion of 

 the same plant, preserved in carbonaceous matter on a very 

 fine block of shale. The surface of this impression is probably 

 cast of an inner layer of the cortex. There are indications of 

 four large scars, the central parts of which are most distinct, 

 but like the rest of the surface covered with short raised lines 

 or ridges, corresponding to the depressed punctures seen on 

 Bothrodendron punctatmn, L. et H. On one part of the slab 

 the leaves are shewn distinctly, and apparently united to the 

 leaf-scars. Specimen about seven inches in length. 

 Loc— Shale above High-Main Seam, So. Shields. (H. C. 394). 



201. — Ulodendron majus, L. etH. 



Impression of the inner surface of three or four scars, and 

 with very distinct appearance of the leaves arising from the 

 scars on one side ; the leaves curve upwards, and then down- 

 wards, are broadish at the base, and with a distinct midrib. 

 They are an inch and a half long, and resemble those of L. 

 Sternbergii. 

 Loc. — Shale above the Bensham Seam, Jarrow. (H.C. 397). 



202. Impression of the inner surface of the cortex in coal, 



on which is seen the shape of three large scars, with hollows 

 radiating from the centre of each scar, in which is a circular 

 aperture, indicating the passage by which the vascular bundles 

 have passed through the scars ; the rest of the surface covered 

 with impressions of the small rhomboidal leaf-scars. 

 Loc. — Shale above the Bensham Seam, Jarrow. (27. C. 392). 



