22 STUDIES IN GEOLOGY, No. 4 



Stur, Calam. Schatz. Schicht., p. 145, pi. Ill, Fig. 3-5, Fig. 5-6; 



pi. XVI, Fig. i, 2 (non pi. i, Fig. 3; pi. IX, Fig. 2; pi. XIV, 



Fig. i), 1887. 

 Toula, Die Steinkohlen, p. 202, pi. V, Fig. i, 2, 9 (non Fig. 26), 



1888. 

 Renault, Fl. foss. terr. houil. Commentry, p. 385, pi. XLIII, 



Fig. 1-3; PI. XUV, Fig. 4, 5, 1890. 



Hofmann and Ryba, Leitpflanzen, p. 24, pi. I, Fig. 6, 1899. 

 Potonie, Landschaft, p. 27, Fig. 17, 1899. 

 Zeiller, Elements paleob., p. 149, Fig. 149, 1900. 

 Scott, Studies, p. 15, Fig. 2, p. 16, Fig. 3, 1900. 

 Kidston, Proc. Yorksh. Geol. and Poly. Soc., vol. XIV, p. 200, 



202, 215, 225, pi. XXX, Fig. i; pi. XXXV, Fig. 3, 1901. 

 Zeiller, Blanzy et Creusot, p. 126, pi. XXXVII, Fig. i, 1906. 

 Sterzel, Baden, p. 429, pi. XVIII, Fig. (?i) 2 (non pi. XIX, 



Fig. i), p. 506, pi. XXXI, Fig. 2, pi. XXXII, Fig. i, p. 549, p. 



702, pi. LVII, Fig. i bei A, Fig. 2-5, pi. LVIII, Fig. (?i) 2, 



3, pi. UX, Fig. i, 1907. 



Zalessky, Donetz I, Domherr, p. 363, Fig. i, 2, 1907. 

 Zalessky, Dombrowa, pp. 17, 51, Fig. 4, 1907. 

 Renier, Methodes, p. 41, Fig. 16, 1908. 

 Schuster, Saarbr. Sch., p. 229, Textbeil. L, Fig. i, 2, 1908. 

 Scott, Studies 2e., p. 17, 18, Fig. 2, 3, 1908. 

 Arber, Fossil plants, pi. p. 52, 1909. 

 Renier, Paleontologie, pi. 43, 1910. 



Jongmans, Karbonfl. West-Europas, p. 164, fig. 137-142, 1912. 

 Kidston, Cat. Pal. Plants, p. 24, 1886; Trans. Roy. Soc. Edinb., 



vol. 50, pt. i, p. 117, 1914. 



Lesquereux, Coal Flora, p. 20, pi. i, figs. 3, 4, 1880. 

 Jongmans, Fl. Carb. Netherlands Atlas, pi. 39, figs. 2, 3; pis. 



82, 83, 84, 85, 86, 87; pi. 88, figs. 2, 3; pi. 89; pi. 90, fig. 2; pi. 



136, figs. 2, 3; pi. 137, figs, i, 2; pi. 138, fig. i, 1915. 

 Kidston, Veget. Houil. Beige, p. 113, 1911. 

 Sterzel, Fl. Rothl., p. 87, pi. 10, fig. i, 1893. 

 Andrae, Neues Jahrb., 1864, p. 164; Jahrb. Naturw. Ver. Halle, 



p. 1 19, 1859. 



Brongniart, Prodrome, p. 37, 1828. 

 Boulay, Recher. Pal. Veget., p. 7, 1880. 

 Fontaine & White, Perm. Fl., p. 35, 1880. 

 Zeiller, Fl. foss. bass. Heraclee, p. 59, 1899. 

 Arber, Phil. Trans. Roy. Soc., Lond., vol. 202 B, p. 241, 1912. 

 Calamites cequalis Sternberg, Versuch, II, Fasc. 5-6, p. 49, 1833. 



