PROM THE HUTTON COLLECTION. Ill 



scar and disappearing with the ridge above. The similarity 

 of these numerous scars is remarkable, as they vary only in 

 appearance close to the right and left sides, where in one or 

 two instances the central ridge is absent and the two depres- 

 sions are thrown together in a broadish furrow. This appear- 

 ance is exactly the reverse of what is shewn in the drawing, 

 yet the drawing has not been made from the counterpart. If 

 these surface impressions were due to cylindrical processes 

 alone, we could not have expected to see such a series of uni- 

 formly regular markings. As figured, pi. 97 b, the entire 

 surface is covered with fine wrinkled lines which is very 

 characteristic of Knorria, but which I have seen in no other 

 fossil plant, though some of the specimens which are classed 

 here with Cordaites have a minute shagreen appearance, which 

 occasionally runs into short lines but differs from Knorria, 

 and there is a transverse wrinkling shewn on Boulay's Rhyti- 

 dodendron, but the direction differs eutirely from this. These 

 appearances make it hard to believe that Knorria is only the 

 impression of an internal layer or state of preservation of a 

 species of Lepidodendron, and that the scars on the surface 

 are due merely to vessels passing from the medullary sheath 

 or axis to the cortex. There are nearly one hundred leaf-scars 

 on the surface of this specimen. 

 Loc. — Shale above the Low-Main Seam, Felling. (H. C. 408). 



221. — Lepidodendron longifclium, Brongt., L. et H. Type pectmen, 



F. F., pi. 161. 

 No one would recognise this specimen at first sight from the 

 drawing given of it by Lindley and Hutton in Foss. Flora, 

 but there can exist no doubt that it is the genuine specimen 

 from which the drawing was made, as it bears Hutton's own 

 label and answers to the figure in some other particulars, 

 although it is so badly represented. The large slab bears the 

 impression of a small portion of a branch with a dense tuft 

 of narrow elongated leaves more than a foot in length. On 

 the back of this specimen there is one of Hutton's original 

 labels, on which is written, " Lepidodendron longifolium, Fell- 

 ing, L.M.," in Mr. Hutton's own handwriting. 

 Loc. — Shale above the Low-Main Seam, Felling. (H. C. 362). 



222.—Cyperites ? 



There are a few long acicular leaves, some with a midrib and 

 others with numerous longitudinal lines and other organisms 

 on this slab. The leaves have some resemblance to those 



