34 U r AL.EOIS TOLOG Y . 



Describes the vegetable remains, and briefly notices in an appendix 

 the more remarkable animal fossils. 



Williamson-, Prof. "W. C. Primeval Vegetation in its relation to the 

 Doctrines of Natural Selection and Evolution. Essays and Ad- 

 dresses by Professors of Owen's College. 8vo. London. Pp. 199- 

 255. 

 A summary of the successive stages of terrestrial plant-life is given ; 

 . and the author shows that the known facts are opposed to the doctrine 

 of evolution, but that they indicate the operation of some as yet 

 unknown factor in the production of the new forms which successively 

 appeared. W. C. 



. On Fern stems and petioles in the Coal Measures. Bep. 



Brit. Assoc, for 1873, Sections, p. 106. 



Considers his Edraooylon to be the petiole of a Pecopteris, his Heter- 

 angium Grievii probably a fern, and Corda's Pahnacites to be a 

 Marattiaceous fern. W. C. 



. On the Organization of the Fossil Plants of the Coal Measures. 



— Part V. Asterophyllites. Phil. Trans, vol. clxiv. pp. 41-81, 

 plates i.-ix. 

 The minute structure of stems, roots, and leaves belonging to this 

 genus are described ; the structure of the cone described as VoUcmannia 

 Binneyi, Carr., is investigated ; and reasons are adduced for believing it 

 to belong to the same genus, to which SpJienophyllum is closely related ; 

 and the author believes that these two fossils are Lycopodiaceous 

 plants, and not related to Catamites, as has been heretofore generally 

 maintained. W. C. 



. On the Organization of the Fossil Plants of the Coal 



Measures. — Part YI. Ferns. Phil. Trans, vol. clxiv. pp. 675-703, 

 plates li.-lviii. 

 An elaborate account of specimens referred by the author to the 

 petioles of ferns, and described as EacMoiDteris aspera, B. Oldhamia, B. 

 duplex, B. Lacaitii, B. hihractiensis, and Anaclioropteris Decaisnii. 



w. c. 



. On the Structure of Stigmaria. Mem. Lit. Phil. Soc. Man- 

 chester, vol xiv. pp. 45-50. 



Maintains that the centre of the axis was entirely cellular, that the 

 vascular bundles to the rootlets spring from the wedges of the vascular 

 cylinder, and that the free bundles noticed by Goeppert in 4he axis 

 belong to rootlets foreign to the Stigmaria. W. C. 



. On Coal and Coal Plants. Macmillan's Magazine, vol. xxix. 



pp. 404-417. 



A popular exposition of the author's views on the structure of coal, 

 and the nature of the plants growing on the earth at the time it was 

 formed. W. C. 



