Correspondence — Mr. C. J. A. Meyer. — Mr. Jukes- Browne. 143 



for all information on the subject, I eagerly waited for a paper 

 announced for the Geological Society on a new " Cambrian " find in 

 North Wales. The paper appeared, and the "Cambrian" turned out 

 to be Arenig. The author, of course, was a student of the Cambridge 

 School. Those of us who are simply workers, and not sectarians, 

 should not have our tools broken by the worshippers of great 

 names. Charles Callaway. 



Wellington, Salop, January 6th, 1878. 



CHLORITIC MAEL AND UPPER GREENSAND. 



Sir, — I beg the favour of space for a brief reply to Mr. A. J. 

 Jukes-Browne's questions which appeared in the Geological 

 Magazine for January, 1879. Mr. Jukes-Browne asks: 



(1). "Why has he (Meyer) changed his mind regarding bed 13 

 (of the Beer Head Sections), and why does he not identify it with 

 the zone of Belemnites plenus ?"■ 



(2). "What does he mean in saying that he was therefore wrong 

 in giving Holaster snbglobosus so wide a range in his tables of 

 fossils ? Is it not found in the beds where he marks it as 

 occurring ?" 



In reply to question (1) : It would be hardly correct to say that I 

 have changed my mind regarding bed 13. In 1874 I described it 

 as representing Chalk Marl. More recent examination has convinced 

 me that I am right in placing it above the Chloritic Marl, and I now 

 identify it with the zone of Belemnites plenus. 



To question (2) I can but repeat my acknowledgment (in Geol. 

 Mag. for Dec. 1878) of error in my tables of fossils of the Beer 

 Head Sections. 



For the rest I shall be happy to continue this discussion so soon 

 as Mr. Jukes-Browne may have found " an opportunity of refresh- 

 ing his recollection of the Isle of Wight sections," by reference to 

 the disputed rocks and fossils in situ. By such time perhaps some 

 acceptable term may have suggested itself which may replace that 

 of Chloritic Marl. C. J. A. Meyer. 



January 6th, 1879. 



Sir, — Having informed Mr. Meyer of the typographical error 

 which occurred in my last letter, 1 he has been good enough to send 

 me fuller particulars, in answer to my questions, than are contained 

 in his reply sent to you for insertion in the Geological Magazine. 

 I gladly avail myself of his permission to transmit them to you for 

 publication, as they contain fresh evidence regarding the zones in 

 the Devon cliffs. Mr. Meyer writes to me as follows : — 



" You may remember that in my description of bed 13 in 

 1874, I referred it to the base-bed of the Chalk Marl. That 

 is to say, I considered it then as the lowest representative of 

 the Chalk Marl of that particular district. I described it as 

 distinct from the Chloritic Marl, because it even then appeared 

 to me to represent Chalk Marl as to its matrix and older beds 



1 At p. 48, line 9 from foot of page, for " not " read ' ' now." 



