The Levenshulme Limestones, 287 



thin shales. Annelids like the Spirorbis yVfhich. here abounds, 

 are to be found on our sea coasts, feeding on seaweed, and 

 the Entomostraca are likewise existing now in sea water 

 and stagnant pools, where they furnish food for small fish 

 such as are found in these limestones. When polished this 

 first group of limestones takes a beautifully even surface of a 

 pinkish grey, upon which a few Spirorbis may readily be seen 

 with the naked eye, but no distinct trace of other fossils. 

 No fossils were found on breaking up a large quantity of 

 the stone. When, however, a thin section is prepared for 

 the microscope it is at once seen that the solid rock abounds 

 in organic remains ; and it is clear that the tiny crustaceans 

 which built up the mass with their thin shells are not to be 

 seen by the naked eye. Entomostraca abound in these 

 limestones as well as the Spirorbis ; and there are many 

 spines visible which may be the antennae of some shrimp- 

 like crustaceans. 



The beds of limestone vary in number at different 

 points ; the thin flag-like members part and re-unite in the 

 course of a few yards. The sections on the north and south 

 sides of the railway cutting were as follow : — 



Summary of Group No. I. 

 North. South. 



ft. in. ft. in. 



Limestone ... 







2^^ 



Limestone ... 







6 to 



,, ... 

 Green Shale. . 





 



I 



Green Shale. . 







H 



Limestone ... 







2 



Limestone ... 







2J^ 



Shale 







^ 



Shale 







'A 



Limestone ... 







3 



Limestone ... 







4 



Green Shale. . 







I 



(Spirorbis) 

 Shale 







H 



Limestone ... 







4 



Limestone ... 







7 



»j ••• 







4 



Green Shale. . 







2 



Green Shale.. 







2 









Red Rubbly 

 Rock 







Red Rubbly 

 Rock 







9 



