﻿STUDER ON THE MOLASSE. 



103 



(Aus.) 26. Calamites Suckovii, Brongn. 



This variable plant, so abundant in the Coal-measures and so 

 widely distributed, occurs also in the Anthracite of the Tarentaise 

 and of Styria. 



27- Annularia brevifolia, Brongn. 

 Beudant's Mineral, und Geolog. p. 557. fig. 212. 

 Col de Balme ; Petit-Coeur. 



Seems to be pretty abundant : some specimens entirely agree with 

 some from the coal of St. Etienne, near Lyons, and of St. Imbert, 

 which we possess in our Collection ; others have rather shorter leaf- 

 lets. It has thin stalks, furnished with delicate leaf-whorls. These 

 consist of twelve to sixteen leaflets, which are almost wedge-shaped ; 

 they widen outwards by degrees, and are obtusely rounded. From 

 the leaf-whorls proceed delicate branches (apparently one on each 

 side), the leaf- whorls on which gradually diminish in size. 



The Annularia fertilis, Sternb., abundant in the Coal-measures, 

 and also found in the Anthracite of the Stang-Alp, has not yet been 

 detected in our mountains. 



(*)28. Asterophyllites anthracintjs, Heer. 



Caule gracili, foliis verticillatis arcuatis filiformibus, internodis triplo longioribus ; 

 verticillis sub-patentibus, 



Petit-Coeur. 



On the same stone with Neuropteris Escheri. Unquestionably 

 the same as Bunbury's^ Asterophyllites No. 12 of the Tarentaise 

 and No. 10 of the Col de Balme, which that botanist compares to 

 Asterophyllites foliosus, L. & H.; in which, however, the leaves are 

 longer than the internodes. It differs from A. longifolius, St. sp., 

 which Brongniart and Bunbury describe from the Tarentaise, in its 

 shorter internodes, and in the leaves, which are shorter, standing 

 more apart from the stem. The stem is slender, not above 1"' in 

 breadth at the thicker end. Towards the extremity the internodes 

 become shorter, so that the whorls of leaves are closer together. 

 The leaflets are fan-shaped, of almost uniform breadth, standing off 

 from the stem and describing a curved line. From eight to ten ap- 

 pear to form a whorl. rj^ C. M 1 



On the Slow Elevation and Subsidence of the Land in 

 Switzerland. By Prof. B. Studer. 



[Verhandl. d. Schweitz. Naturf. Gesellsch. 1848, zu Solothurn, p. 37-41 ; and 

 Leonhard u. Bronns Jahrb. f. Min. 1850, p. 221.] 



1 . In the neighbourhood of the Alps the Molasse has a thickness of 

 from 1000 to 1500 feet, which decreases in proportion to its distance 

 therefrom. The marine organic remains present the same species 

 X Loc. cit. pp, 140 & 142. 



