80 DB. E. A. NEWELL ABBEB OX THE [April I914, 



and thus to determine, if only roughly, the number of feet of 

 measures belonging to each horizon, as proved in these borings. 



The present study of the Kent coalfield has extended the known 

 vertical distribution of certain species, but not to any marked 

 degree. There is, first of all, the possible, but somewhat doubtful, 

 occurrence of Pecopteris arhorescens ? (Schloth.) in both the 

 Transition and the Middle Coal Measures. Splienopteris scliil- 

 lingsi Andra and Pecopteris crenulata Brongn. are recorded for 

 the first time from the British Transition Measures, and the 

 latter also from the Middle Coal Measures. Mdriopteris latifolia 

 (Brongn.), Neuropteris fimbriata ? Lesq., and Lepidoplii/Ihim 

 minus Groode are also shown to occur on the former horizon. From 

 the Middle Coal Measures we have the first records of JSfeuropteris 

 ovata Hoffm. and Lepidoplu/Uum intermedium L. & H. All 

 these species have, however, been previously found on other 

 horizons in Britain. Otherwise the vertical distribution, assigned 

 here to the plants occurring in Kent, agrees with that already 

 published from other coalfields. 



* XV. BlBLIOGBAPHT. 



Aebee, E. A. N. (1909). 'On the Fossil Plants of the Waldershare & Fredville 



Series of the Kent Coalfield ' Q. J. G. S. vol. lxv (1909) p. 21. 

 Aebee, E. A. N (1912). ' A Note on some Fossil Plants from the Kent Coal-field' 



Geol. Mag. dec. 5, vol. ix (1912) p. 97. 

 Aebee, E. A. N. (1914). 'A Revision of the Seed Impressions of the British Coal 



Measui-es' Ann. of Bot. vol. xxviii (1914), p. 81. 

 Zeillee, R. (1892). ' Sur les Empreintes du Sondage de Douvres ' C. R. Acad. 



Sci. Paris, vol. cxv (1892) p. 626. Also Ann. Mines, ser. 9, vol. ii (1892) 



p. 599 ; and transl. in Trans. Manch. Geol. Soc. vol. xxii (1895) p. 55. 

 Zeillee, R. (1894). ' Note sur les Rapports de la Flore du Bassin Houiller de 



Douvres avec la Flore du Bassin du Pas de Calais ' C. R. Soc. Industr. 



Minerale, 1894, p. 122; see also 'Colliery Guardian' vol. lxviii (1894) p. 788. 



EXPLANATION OF PLATES XI-XIII. 



All the specimens are in the Carboniferous Plant Collection, Sedgwick 

 Museum, Cambridge, to which they have been kindly presented by Mr. Arthur 

 Burr. The registered numbers quoted refer to this collection. [The photo- 

 graphs should in several instances be examined with the aid of a hand-lens. 

 They are by Mr. W. Tarns, Cambridge.] 



Plate XI. 



Fig. 1. Lonchopteris eschiveileriana Andra, from the Middle Coal Measures 

 of the Stodmarsh Boring, at 1865 feet. No. 2276. X f. (See 

 p. 72.) 



2. Pecopteris arhorescens? (Schloth.), from the Middle Coal Measures 



of the Goodnestone Boring, at 2000 feet. No. 2234. Natural size. 

 (See p. 73.) 



3. Pecopteris crenulata Brongn., from the Transition Coal Measures of 



the Barfreston Boring, at 2009 feet. No. 2502. Natural size. 

 (See p. 73.) 



4. Dictyopteris miinsteri (Eichw.), from the Middle Coal Measures of the 



Woodnesborough Boring, at 1618 feet. No. 2434. Natural size. 

 (See p. 72.) 



