12 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Nov. 6, 



much water-worn or decomposed ; incrusted with coprolite and P. 

 sigillum. Derived probably from Old Red Sandstone of Scotland. 

 Collection W. M. ; in Mr. Browne's collection is a smaller piece. 



No. 3. A larg subangular block of soft friable grey sandstone, 

 measuring 14 x 12 x 6 inches ; rather rounded and water-worn ; 

 incrusted with coprolite, P. sigillum, and Ostrea ; probably of 

 Carboniferous origin. Collection W. J. Sollas. 



No. 4. A subangular block of a fine conglomerate, consisting 

 of small stones set in a purple quartzose matrix, measuring 

 6 x 4 x 3| inches, much rounded and water-worn ; incrusted with 

 coprolite, P. sigillum, and Ostrea. Resembles closely some of the 

 Old Red conglomerates near their junction with the Silurian strata 

 in Scotland. Collection A. J. Browne. 



No. 5. A long square prism of black compact limestone, mea- 

 siring 8x4x4 inches, rather decomposed outside and pierced by 

 a small boring animal ; incrusted with coprolite, which penetrates 

 all its cracks and hollows. Very similar in character to the Car- 

 boniferous black marbles. Collection W. M. 



No. 6. An obtuse-angled prism of hard reddish sandstone, with 

 included fragments of felspar, measuring 6x8x4 inches ; very 

 angular, with sharp edges ; incrusted with Serpula, 0. vesiculosa, 

 P. sigillum, and coprolite. Collection W. J. Sollas. 



No. 7. An angular broken fragment of black basalt, with nu- 

 merous crystals of olivine ; in size 6x5x3; rather decomposed 

 on the outside and weathered white ; resembles some of the olivine 

 basalts on the east coast of Scotland. Collection W. . J. Sollas. 

 This stone has none of the characteristic Upper Greensand incrus- 

 tations ; it was obtained, however, with other stones which had, and 

 the workmen declared they had all come from the " coprolite bed." 



Besides the foregoing larger fragments, several smaller pieces are 

 higbly interesting : — 



No. 8. A cuboidal subangular tablet of compact brown siliceous 

 limestone, measuring 3 x 3 x 1^- inches ; smoothed, and abundantly 

 scratched in various directions ; incrusted with P. sigillum and 0. 

 vesiculosa. Collection W. M. 



No. 9. A roundish granitic fragment, about 5x4x2 inches ; 

 worn and decomposed, but showing on one side a flat surface with 

 what seem to be traces of ice-polishing ; incrusted with coprolite 

 and P. sigillum. Collection W. M. 



No. 10. A small flatfish fragment of green sandy mica-schist, 

 about 3^ x 2 inches ; smoothed on its flat faces and faintly striated ; 

 incrusted with coprolite and P. sigillum. Collection A. J. Browne. 



No. 11. A rounded and water-worn fragment of tough decom- 

 posed green trap, about 4x3x2; incrusted with Ostrea and P. 

 sigillum, very similar to some of the green traps on the east coast of 

 Scotland, for example those of Fife. 



No. ] 2. A small broken fragment of granite composed of felspar, 

 black mica, masses of fibrous hornblende, and irregular crystals of 

 quartz, much decomposed. Collection W. M. 



Fragments of gneiss, mica and hornblende schists, talcose 



