Artis's Antediluvian Phytology. 297 



some by the author himself: each plate is accompanied by a 

 page of descriptive matter; and we shall give the most correct 

 view of Mr, A.'s labours, by extracting the generic and spe- 

 cific characters with the synonyms and localities, of the fossils 

 he describes. We shall give one of his descriptions entire ; 

 and where not otherwise expressed, the genera and species in 

 the following enumeration are new. 



Hydatica. Stem arborescent, jointed, branched ; leaves 

 long, linear. 



prostrata. Stem jointed, slightly striated; joints formed 

 with irregular sutures, from whence arise tufts of linear leaves. 

 •T— Found imbedded, in a compressed state, in the shale which 

 forms the roof of the coal bed in the upper El-se-car coal- 

 mine, near Wentworth, in the west riding of Yorkshire, 

 the property of Earl Fitzwilliam: fragments of it may also be 

 observed in the roofs of several chambers of that colliery 

 whence the coal has been extracted, and which are called by 

 the colliers " Old Binks." 



columnaris. Stem branched all the way up, ending in a 

 club-like head; branches alternate, simple, covered with leaves; 

 leaves hair-like, parallel, two-ranked. — Found imbedded hori- 

 zontally in the black micaceous shale which covers the thick 

 coal in the upper El-se-car colliery. 



Calamites, auct. Stem jointed, longitudinally striated ; 

 impressio7is at the articulations usually forming rings round 

 the trunk. 



ramosus. Stem arborescent, branched ; branches cylin- 

 drical, inserted at the articulations of the trunk, striated ; ar- 

 ticulation of the branches surrounded by a striated disk. — 

 Found imbedded both horizontally and vertically, in sandstone, 

 in Lea-brook quariy, near Wentworth : also of a great length 

 in El-se-car new colliery. 



approximatus. Stem arborescent, jointed ; joints very short, 

 intercepted by distinct articulations, with small compressed 

 tubercles, forming a studded ring round the trunk. — C. ap- 

 proximatus, Sternberg; C. approximatns and C. intemqjttis, 

 Schlotheim. — Found imbedded horizontally in the soft sand- 

 stone at the bottom of the rock in Hober quarry near Went- 

 worth, in other parts of Yorkshire, also in Durham, and near 

 Newcastle ; and on the continent. 



Pseudo-bamhusia. Articulations more or less distant ac- 

 cording to the size of the plant ; striae intercepted at the arti- 

 culations. C. pscudo-bambusia, Sternberg; Phijtolithvs {^anm- 

 dineus) graminis ? Martin. — Of very common occurrence 

 throughout the whole of the coal-formations of England. 



dubivs. Slriaa narrow, with a fine obscure groove running 

 \'ol. 6fi. No. ?,'M). Oct. 1825. P p down 



