1881.] fossils of the Indian Oondwdna system. 173 



Most of them who have visited areas where rocks belonging to the system 

 occur, have collected fossils and contributed papers towards the knowledge 

 of its geology, others again towards that of its palaeontology. As the respec- 

 tive papers are chiefly contained in the publications of the Geological Survey, 

 it is sufficient to refer to these without enumerating the papers in detail. 

 They are contained in the Records and Memoirs of the Geological Survey 

 as well as in some of the volumes of the Palseontologia Indica. I may 

 especially mention the papers of Mr. W. T. Blanford (in Memoirs and 

 Records), W. Theobald (Memoirs and Records), Thomas Oldham (Memoirs, 

 Records and Palseontologia) J. G. Medlicott (Memoirs), T. W. H. Hughes 

 (Memoirs and Records), H. B. Medlicott (Records and Memoirs) V. Ball 

 (Memoirs and Records) A. B. Wynne (Memoirs and Records) W. King 

 (Records and Memoirs) R. B. Foote (Memoirs and Records) F. R. Mallet 

 (Memoirs) C. L. Griesbach (Memoirs). I have myself contributed papers on 

 Gondwana fossils to the Records and to the Palseontologia Indica and Mr. 

 Lydekker has described some of the vertebrate animals of this system, also 

 in Records and Palseontologia Indica. 



A detailed account of the various features of this system, as known 

 up to 1879, is to be found in the Manual of Geology of India, to whieli 

 I particularly refer. Of papers referring to the Gondwana system, publish- 

 ed by officers of the Geological Survey elsewhere than in the Survey publi- 

 cations, I have especially to mention Mr. Y. Ball's " Jungle life" 1879, and 

 his paper " On the coalfields and coal production of India" 1879. # I have 

 already contributed a paper on Raniganj plants to the Society's Journal in 

 1876f and Mr. R. Lydekker, as mentioned above, published in the same 

 Journal a Sketch of the history of the fossil Vertebrata of India where also 

 the Vertebrate fossils of the Gondwana system (Pisces, Batrachia and 

 Mejptilia) are referred to. 



I have to mention at last, that some officers of the survey collected 

 fossils in various districts, though they have not published papers on the 

 same, thus Mr. V. Ball collected largely in the Raniganj field (Raniganj 

 and Panchet groups) also in the Satpura basin ; Mr. F. Fedden near 

 Nagpur, Isapur, south of Chanda (Wardha valley coalfield), in Kathiawar 

 and in Kach, and Mr. C. A. Hacket in the Satpura and South Rewah 

 basins. 



I shall now make a few remarks on the stratigraphical divisions, as I 

 shall have to refer to them, when enumerating hereafter the plants. 



We have at first divisions into " upper" and "lower" portions of the 

 Gondwana system ; but here it must be remembered that this classification is 

 not to be taken in the rigid sense, which formerly used to be the case with 



* Scientific Proceedings of the Koyal Dublin Society, 21st April 1879. 

 f Vol. XLV. Based upon a collection of plants made by Mr. J. Wood-Mason. 

 23 



