Vol. 56.] 



SHALES OF THE WELSH BORDERLAND. 



393 



it is continued again higher up, and beds with M. Memingii vars. y 



& <5 and M. dubius are 



Fig. 7. 



Map 



illustrating exposures 



near 



GarbettsV 

 Hall * 



Scale of V3 of a Mile 



still seen (loc. 47 in fig. 6, 

 p. 391, & Table IV, 

 col. D). These, how- 

 ever, are almost imme- 

 diately succeeded by beds 

 with a colonus-like form 

 belonging to the Lower 

 Ludlow. 



(B) Section on the 

 West Side. 



Fig. 8. g 



Map 

 of exposures 



along 

 Ackley Lane. 



ii&na 



Section 

 Garbett's 



near 

 Hall. 



Ackley 



The road leading up 

 from the Smithy near 

 Buttington, past Gar- 

 bett's Hall, affords an 

 interesting section of the 

 passage between the 

 upper part of the Wen- 

 lock Shales and the Lower 

 Ludlow Beds. Just below 

 Garbett's Hall, where a 

 road comes in on the 

 right, there is a good ex- 

 posure of Wenlock Shales 

 and Flags dipping E. 

 10° S. at 55°, and the 

 flags are also seen in the 

 lane a little below. This 

 exposure has yielded the 

 forms enumerated in 

 Table V, col. G (p. 395). 

 This is obviously the zone 

 of Cyrtograptus Lund- 

 greni. Slightly higher 

 up the lane occurs an 

 exposure of hard flags 

 with numerous remains 

 of a large colonus-like 

 form ; while still farther 

 up, below the fork of the 

 road, hard calcareous 

 flagstones are found with 



a typical Lower Ludlow fauna : — Monograptus colonus, M. Nilssoni, 



and M. bohtmicus. 



"Llwyn= 

 rhedith 



'h 



