48 



6. Coal mining ; 7. Igneous veins and dykes ; 8. Joints in sand- 

 stone ; 9. Lamination and stratification ; 10. Denudation and 

 unconformity; 11. Vein mining; 12. Volcanoes. 



The authors of these drawings were members of the Irish 

 Geological Survey, and their illustrations, with few exceptions, 

 are drawn from actual observations made in the field. 



143. Geological diagrams by P. Gervais, on linen and 

 rollers. Price, 30s. unmounted. 



1881. Published by G. Masson, Paris. 



These are drawn on a black ground, and are of uniform size, 

 about 2 ft. 11 in. by 2 ft. 2 in. Ten represent fossils, and two 

 the phenomena of glaciers, volcanoes, springs, &c. See No. 185. 



144. Two diagrams by Credner, mounted with rollers, 

 representing the Stegocephala of the Eothliegende, viz., 

 Branchiosaurus amblystomus, Pelosaurus laticeps, and 

 Melanerpeton pulcherrimum. 



1887. Published by W. Englemann, Leipzig. 



145. Diagrams of fossils. Prepared by Dr. Karl A. 

 Zittel and Dr. K. Haushofer. Mounted on linen and 

 roller ; size 4 ft. 8 in. by 3 ft. 8 in. Price, mounted, with 

 text, 30s. 



1880. Published by H. Fischer, Cassel. 



There are six diagrams representing invertebrate fossils, viz., 

 1, Ehizopoda ; 2. Sponges ; 3, 4. Corals ; 5. Mollusca ; 6. Kesto- 

 ration of the coal period. 



146. Table of British strata. Coloured by J. B. 

 Jordan. Mounted on linen and roller ; size 9 ft. 5 in. by 

 3 ft. 4 in. 



1884. Published by E. Stanford. 



147. Johnston's Illustrations of Natural History. 

 No. 5. Mineralogy and Palaeontology. Prepared by 



Prof. C. Gilbert Wheeler ; size 4 ft. 4 in. by 3 ft. 6 in. 

 Mounted on linen and roller. 



1879. Published by W. and A. K. Johnston. 



148. Plates of British, fossils. Nineteen sample plates 

 from the annual volumes of the Palasontographical 

 Society. 



1876. Lent by Rev. Thos. Wiltshire. 



149. Plates illustrating microscopic structure in 

 minerals and rocks. A group of four plates, framed and 



