12 CONTRIBUTIONS TO FOSSIL BOTANY, PUBLISHED 1869. 



Carruthers, W., On tlie Structure of the Stems of the Arborescent 



Li/copodiacea of the Coal Measures. No. II. Ulodendron minus, 



Lindl. and Hutt. Month. Micro. Journ.vol. i. p. 225-227, pl.xxxi. 



The author proposes to describe the minute structure of these stems, 



and compare them with recent structures. Two forms are described 



in these papers. 



On the Structure and Affinities of Sirjillaria and allied 



Genera. Quart. Journ. Geol. Soc. vol. xxv. pp. 248-254. pi. x. 

 The structure of the known parts of this genus is described, and it 

 is referred to Lycopodiacece. 

 CoBMANS, EuG. Note sur la Famille des Equisetacees. Journ. Bot. 



Vol. VII. pp. 337-340. 

 The author reviews the different parts of Calamines which have re- 

 ceived separate names, and unites them under four genera, — Calamiles, 

 Annnlaria, SphenojjJiyllum, and PhyUotheca, — in the suborder Cala- 

 miteee of Equisetace.ce. 

 Dawson, J. W. On Calamites. Ann. Nat. Hist. ser. 4, vol. iv. 



pp. 272, 273. 

 The author confirms the views of M. Grand'Eury, but in two points 

 his observations differ from those of M. Grand'Eury. None of his 

 specimens had long rhizomes, the secondary stems budding almost 

 directly from the primary ; and he has found leaves in connection with 

 three species. 

 Grand'Eury. Observations on Calamites and AsterophylUtes. 



(Translated from the ' Comptes Rendus,' March, 1868.) Ann. 



Nat. Hist. ser. 4, vol. iv. pp. 124-128. 

 Erora observations on upright Calamites in the coal-measures of the 

 Loire, he describes this genus as having creeping rhizomes ; articu- 

 lated, fistular, and septate stems ; the thin outer portion of which con- 

 sists of (1) an exterior cortical layer, now converted into coal; (2) a 

 thin layer of vascular tissue, now invariably destroyed ; and (3) a sort 

 of inner lining of epidermis, which is carbonified. The flutings are on 

 the outer surface of the thin vascular cylinder. There is no evident 

 trace of the insertion of leaves. The greater number of AsterophylUtes 

 he' considers as belonging to other stems than Calamites, and for them 

 he proposes the name Calamophyllites, and distinguishes them from 

 Calamites as having articulate, very certainly hollow, and septate 

 stems, of herbaceous nature, and not always regularly striate ; leaves 



