26 FOSSIL PLANTS. 



Germar previously called attention to a similar occurrence in C. alternant* 

 This peculiarity is seen in some of the specimens of C. Suckowii in the Collection. 

 In one example six furrows occupy the space of seven furrows in the next 

 succeeding internode, and I have several times met with such specimens. 



The explanation of this local disarrangement of the furrows on Calamite 

 stems seems to be clearly indicated by Prof. Williamson in his paper "On the 

 Organization of the Fossil Plants of the Coal Measures. Part I. Catamites,'^ 

 where he says : " Indications of wedges intercalated after the first growth had 

 begun have only been met with in one example, in which a solitary wedge 

 first appears at a point a little external to the concentric line formed by the 

 inner angles of the rest of the series, and it was devoid of the usual accom- 

 panying longitudinal canal. "J 



If, then, in any internode an additional vascular wedge is added, it must of 

 necessity cause a local disarrangement of the furrows, which will be shown 

 by their not holding their normal alternate position to the furrows of the 

 succeeding joint. 



The specimen figured by Schimper as Catamites Suckowii , I am inclined 

 to regard as belonging to Catamites cannceformis rather than to Catamites 

 Suckowii. 



Horizon. Coal Measures. 



Localities. British. Derbyshire : Biddings (Presented by F. Seymour 

 Haden, Esq.). Devonshire : Bideford (Presented by 

 Eev. W. Bilton). Durham : Jarrow Colliery. 

 Lanarkshire : Carluke (Presented by the British 

 Association) ; Chapelhall, Airdrie ; Dalmarnock ; 

 Shotts (Presented by the British Association). 

 Northumberland : Newcastle-on-Tyne. Shropshire : 

 Coalbrook Dale. Staffordshire : Parktield, near 

 Wolverhampton. Worcestershire : Bewdley, Forest 

 of Wyre. Yorkshire : Leeds. Wales, S. : Ebbw 

 Vale, near Merthyr Tydvil. 



Foreign. Bohemia : Eadnitz. Ehenish Prussia, Saarbruck. 

 Eussia, near Kosloo, Black Sea (Presented by Capt. 

 Spratt, E.N.). Saxony : Hainichen ; Zwickau. 



Calamites ramosus, Artis. 



Catamites ramosus. 



Andrae, Jahrb. d. Naturwiss. Vereines, Halle, 1850, p. 119. 

 Artis, Antedil. Phytol. pi. ii. 

 Boulay, Eecherches de Paleont. Ve"ge"t. p. 8, 1880. 

 Brongniart, Hist. d. V6get. Foss. p. 127, pi. xvii. figs. 5, 6. 



Prodome, p. 37. 

 Bronn, Index Palaeont. p. 199. 



Bunbury, Quart. Journ. Geol. Soc. vol. iii. p. 433, 1847. 

 Dawson, Acadian Geol. 2nd edit. p. 478, 1868. 



Quart. Journ. Geol. Soc. vol. xxii. p. 151. 



Canadian Nat. vol. viii. p. 439. 



Foss. Plants of Lower Carb., Canada, p. 36. 

 Eichwald, Lethtea Eossica, vol. i. p. 165. 

 Fontaine & White, Perm, or Upper Carb. Flora p. 17 

 Giebel, Deutschl. Petrefacten, p. 21. 



Grand 'Eury, More Carbon, du Dep. de la Loire, p. 20, pi. ii fie 4 

 Gutbier, Vers. d. Zwick. Schwarzkohl. p. 18, pi. ii. fig. 6 



* Isis, p. 273, 1838. 



t Phil. Trans. 1871. 



t Loc. cit. p. 481. 



Traite Pal. Veg. pi. xviii. fig. 1. 



