BIBLIOGRAPHY 227 



Preliminary Report of the Committee, consisting of W. C. 

 Williamson and Mr. Wm. Cash, F.G.S., on the Flora 

 of the Halifax Hard Bed. British Association. 1886. 



Report of the above Committee. 1887. 



Monograph on the Morphology and Histology of Stigmaria 

 Ficoides. Palceontographical Society. 1887. 



On Goethe as Botanist and Osteologist. Publications of 

 the English Goethe Society. 1887. 



On the Fossil Trees of the Coal Measures. Manchester 

 Geological Society. 1888. 



On some Anomalous Cells developed within the Interior 

 of the Vascular and Cellular Tissues of the Fossil 

 Plants of the Coal Measures. Annals of Botany. 

 1888. 



General Morphological and Histological Index to the 

 Author's Collective Memoirs on the Fossil Plants of 

 the Coal Measures. Introduction, 1890. Part I., 

 1891. Part II., 1893. Part III., 1894. Manchester 

 Literary and Philosophical Society's Proceedings. 



On our Present Knowledge of the Vegetation of the 

 Carboniferous Age and the Further Advancement of 

 the Study of the Subject. Manchester Geological Society. 

 1891. 



Earlier Palseontographical Work. Manchester Geological 

 Society. 1892. 



Is Stigmaria a Root or a Rhizome? Natural Science. 

 Macmillan & Co. 1892. 



Sigillaria and Stigmaria. By Sir William Dawson and 

 W. C. Williamson. Natural Science. Macmillan & Co. 

 1892. 



The Genus Sphenophyllum. Nature. 1892. 



