292 Mr. Brockbank and Mr. C. E. de Range on 



ft. in. 



Yellow marl o 3 



Purple shaley marl o i 



Limestone nodular and irregular deep 



purple fracture o 10 



Sandy purple marl, in the base of it Lime- 

 stone nodules, resting on the green 

 marl o 10 



Green marl, with Spirorbis shells, pebbles 



at the base of it o 6 



Soft purple marls o 10 



Hard purple and variegated marls, with 

 plant stems and fish-eyes, probably 

 coprolites 4 o 



(In this bed the plant remains were numerous, the pipe- 

 like stems passing through the beds, but no definite 

 structure, and no clearly defined leaves, were found. 

 They were not very carefully examined.) 



Purple shales, with green partings 5 3 



^rd Group of Limestones. 



The thick marls and shales are followed by the 3rd 

 group of limestones. The ist limestone is 5in. thick, and 

 after a thin marl parting a 2nd limestone appears, 5 to 7 

 inches thick. This has a deep purple fracture — another 

 J^ inch parting brings us to the 3rd limestone, 7in. thick. 

 These three limestones are similar in their characteristics. 

 When polished they have a beautiful marble surface of 

 pinkish grey colour, of the shade now called " Esterhazy," 

 spotted all over with Spirorbis in great profusion, and also 

 mottled with yellow-green circular markings, varying from 

 J^in. to tiny round dots. All these indicate the presence of 

 organic remains, of which there must be thousands in a cubic 

 inch. A thin cutting, under the microscope, reveals large 

 numbers of delicate shells of Entomostraca^ and others with 

 more substance and of more oblate curves. They are in 

 perfect condition, the overlapping in the bivalves being 



