172 DR ROBERT KIDSTON ON THE 



Horizons and Localities!. — 



Above Brooch Coal: Grets Green, near West Bromwich. 

 Ten-foot Ironstone Measures : Coseley, near Dudley ; Ettingshall. 

 Roof of Thick Coal: Bradley Colliery, Bilston. 

 Roof of New Mine: Merry hill Colliery, Brierley Hill. 



APPENDIX. 



Annularia microphylla Sauveur. 

 PL X. figs. 1-3. 



1848. Annularia microphylla, Sauveur, Veget. foss. d. terr. houil, de la Belgique, pi. Ixix. fig. 6. 



Description. — Stem jointed, finely striated ; internodes on the ultimate branchlets 

 short, 4 to 6 mm. long and about 0*75 mm. thick. Leaves as long as the internodes, 

 14 to 16 in a whorl, sickle-shaped, lanceolate, widest at their middle, gradually 

 narrowing into a sharp point. Midrib very prominent and placed in a distinct 

 furrow. Margins of leaf involute. Cones small, terminal, or given off the stem singly, 

 apparently not in whorls. (K. No. 2122.) 



Remarks. — Sauveur figured two small fragments of his Annularia microphylla, 

 one of which is a terminal portion and the other a piece of a small branch broken over 

 at both ends. On both of his figures the leaves are distinctly bent or sickle-shaped, 

 and narrower than those of Annularia galioides in proportion to their length. His 

 figure, however, gives the idea that the leaves were somewhat blunt-pointed, and it 

 was this which made me originally think his figure was a slightly inaccurate drawing 

 of Annularia galioides L. & H., sp. 



The lowest whorl of leaves on the left-hand specimen (which is given in inverted 

 position) illustrates well the bent and pointed leaves of the plant I now identify as 

 Sauvkur's species. The absence of a description to his figures makes the identification 

 of some of his plants very difficult. 



Some small specimens of Annularia microphylla Sauveur are given on PL X. 

 That seen at fig. 1, natural size, shows the upper part of an ultimate branch. The 

 internodes at the lower part are about 6 mm. long, but at the upper end are very much 

 shorter. The larger whorls of leaves are 90 mm. in diameter, the individual leaves 

 being about 40 mm. long and at their widest part 075 mm. wide. In springing from 

 the stem they first assume an almost horizontal direction, but soon gradually bend 

 upwards towards the stem. The whorl, as a whole, is thus saucer-shaped. The midrib 

 is very prominent and lies in a little furrow, and the margins of the leaves are distinctly 

 roiled in (involute) (fig. la). The base of a cone-like structure is attached to the apex 

 of this branch, but it is not well preserved. 



