146 FIELD GEOLOGY. 



In the latter case further trouble is probably taken off 

 our hands by the staff of palaeontologists and assistants, 

 and from them we obtain a full account of the fossils 

 obtained in the several beds and localities of the district 

 explored. 



It may be well, however, to give a few hints for the 

 furtherance of private work in this department, and 

 firstly to give a list of the principal books of reference 

 necessary for the identification of fossils, those for 

 England and France alone being mentioned. 



The Publications of the Palccontographical Society, 

 in which 4000 species of British fossils have already 

 been figured and described. 



Decades of the Geological Survey of England. 



McCoy's Palaeozoic Fossils, published by Prof* 

 Sedgwick. 



Sowerby's Mineral Conchology. 



Mantell's Medals of Creation. 



Owen's Palaeontology and Nicholson's Manual of 

 Palaeontology will also be found useful. 



Baily's Figures of Characteristic British Fossils. 

 (Van Voorst.) 



D'Orbigny's Paleontologie Francaise. 



Pictet's MaUriaux pour la Paleontologie Suisse. 



For the fossils of particular formations, such works 

 as Dixon's " Geology of Sussex," Murchison's " Siluria," 

 Eamsay's " North Wales," and other Survey Memoirs 

 must be consulted, as well as papers in the Journals and 

 Transactions of the Geological Societies of London 

 and Paris. 



