30 



—only varying in thickness and frequency ; and at the difficulty, if 

 not impossibility, of pointing out, even in the lest sections (such as 

 Mocktre), -where one ends and the other begins; will it not be 

 better to merge the one in the other, and to call the Avhole series 

 Lower Ludlow 1 



"We have lately seen a further confirmation of this view, in a 

 quarry on the west side of the old Mocktre road, where we find a 

 bed of Pentamerus Knightii at least eight feet thick, surmounted 

 by two or three feet of laminated shales, similar to those in the 

 Lower Ludlow quarry at Church-hill, and containing the same 

 fossils, and especially at least two species of Starfish, and two or 

 three species of Ceratiocaris. Above this comes another bed of 

 Pentamerus Knightii, twelve to eighteen inches thick, covered by 

 more shales, which last we have not yet examined closelj^ However, 

 this occurrence of the Lower Ludlow Starfish, in shale lying above 

 a thick bed of palpable Aymestry Limestone, is a very strong 

 indication of identity between the two series of strata. 



Perhaps it may be well to observe, in reference to the Lingula 

 flags at Pedwardine, that when I was there the other day, to pro- 

 cure some Dictyonema for a friend, I found what I believe to be 

 part of the head of a small Trilobite, which I immediately sent off 

 to jNIr. Salter, who writes that he can make nothing of it, though 

 it may he a Trilobite head ; but another fossil from the same place 

 he thinks is a new shell. We have never previously found any- 

 thing else here, except Dictyonema and Lingulella, though several 

 Trilobites belong to the formation. 



And now, gentlemen, having, in one way or another, got through 

 my year of office, I take leave of you, rejoicing, not only at 

 returning to private life, but also that you will have, as I am led to 

 believe, a much more efficient President to succeed me. 



-fej^S^i}^:^^ 



