The Levenshuhne Limestones, 291 



purple fracture, mottled all over with green oval spots, and 

 are thickly spotted with Spirorbis. They take a good 

 marble polish — and would be of great value for decorative 

 purposes if they could be quarried in large blocks. Un- 

 fortunately this is not the case — they have extremely 

 irregular surfaces, and altogether a roughly brecciated 

 appearance. Under the microscope they again reveal the 

 presence of Entomostraca in great abundance, which Prof. 

 Rupert Jones considers to be of the Carbonia group of the 

 Ostracoda. There are also many curved spine-like objects^ 

 which may be annelida of the Ditrupa class. It will be 

 seen, therefore, that all the members of the second group 

 bear a strong family resemblance, and that they differ 

 altogether from the first group in their construction, 

 although the fossils are similar. 



Summary of No. 2 Group. 



ft. in. 



Purple and green marls o 3 



I St Limestone rough o 4 



Purple calcareous marls with green joints o 8 



2nd Limestone purple fracture o 10^ to 14 



Very irregular surface, the hollows filled in with the green 

 shale above it. 



Yellow parting o j^ 



3rd Limestone, purple fracture o 8}^ 



Brown marl with Limonite o 3 



Green marl shale o 3 



4th Limestone, often joined in one huge 



block, but always showing the parting i i 



Brown parting o i 



5th Limestone i 5 



The next measures are very irregular, and have not been 

 so carefully examined. They are as follow : — 



