RESEARCHES ON THE CARBONIFEROUS FLORA. 271 



(20) WILLIAMSON. On the Distribution of Fossil Remains on the 



Yorkshire Coast, from the Lower Lias to the Bath Oolite 

 inclusive. Trans. Geol. Soc, 1836. 



(21) Williamson. On the Structure and Affinities of the Plants 



hitherto known as Sternbergiae. Mem. Lit. and Phil. Soc. of 

 Manchester, ser. 2, vol. ix., 185 1. 



(22) WILLIAMSON. On the Structure of the Woody Zone of an 



Undescribed Form of Calamite. Ibid., ser. 3, vol. iv., 1869. 



(23) WILLIAMSON. On a new Form of Calamitean Strobilus. 



Ibid., ser. 3, vol. iv., 1870. 



(24) WILLIAMSON. On the Organisation of Volkmannia Dawsoni. 



Ibid., ser. 3, vol. v., 1871. 



(25) WILLIAMSON. On the Relation of Calamites to Calamoden- 



dron. Ibid., ser. 3, vol. x., 1886. 

 (25*) Williamson. General Morphological and Histological In- 

 dex, 3 parts. Ibid., ser. 4, vols, iv.-viii., 1891-94. 



(26) Williamson. Growth and Development of the Carboniferous 



Arborescent Lepidodendra. Ibid., ser. 4, vol. ix., 1895. 



(27) Williamson. Monograph on the Morphology and Histology 



of Stigmaria Ficoides. Palaontograpliical Society, 1886. 



(28) Williamson and Hartog. Les Sigillaires et les Lepido- 



dendrees. Ann. des Sci. Nat. (Bot.), ser. 6, vol. xiii., 1882. 



(29) WILLIAMSON and Scott. Further Observations on the Or- 



ganisation of the Fossil Plants of the Coal-Measures. Part 

 I. Calamites, Calamostachys, and Sphenophyllum. Phil. 

 Trans. Royal Soc, vol. clxxxv., B., 1894. 



(30) Do., do. Part II. Roots of Calamites; in the press. Abstract 



in Proc. R.S., vol. lvii., 1894. 



(31) Do., do. Part III. Lyginodendron and Heterangium ; in the 



press. Abstract in Proc. R.S., vol. lviii., 1895. 



(32) SOLMS-LAUBACH. Obituary Notice of Williamson. Nature, 



5th September, 1895. 



(33) Seward. Do., do. Natural Science, August, 1895. 



(34) Carruthers. Do., do. Journal of Botany, October, 189 5. 



(35) Lester Ward. Saporta and Williamson. Science, 9th 



August, 1895. 



(36) LlNDLEY and Hutton. Fossil Flora of Great Britain. 



I833-37- 



(37) WEISS, C. E. Steinkohlen-Calamarien, i. and ii. Abhandl. 



z. Geologischen Special/carte von Preussen, 1876 and 1884. 



(38) HlCK and CASH. Myriophylloides Williamsoni. Proc. York- 



shire Geol. and Polytechnic Soc, vol. vii., 1881. 



(39) Renault. Nouvelles Recherches sur le genre Astromyelon. 



Mem. de la Soc. des Sci. Nat. de Sdone et Loire, 1885. 



