144 Correspondence — Mr. G. H. Kinahan. — Mr. 0. Fisher. 



only as to its remanie fossils. I had at the time no clear evidence 

 of the horizon of the bed next above, not having then elsewhere 

 sufficiently studied the fauna of the passage-beds from Chalk Marl 

 to Chalk. In 1876, Barrois, as you know, referred bed 13 to 

 Chloritic Marl. In 1877, and again in 1878, I re-examined the 

 Devon cliffs, obtained much additional information, and satisfied 

 myself that bed 13 belonged to a higher horizon than I had at first 

 supposed. I found that bed 13 itself contained Belemnites pleniis. 

 That the bed next above it (bed 14) contained Inoceramus labiatus. 

 That Holaster subglobosus, in some sections wholly absent, abounded 

 here and there only in the top of bed 12, was to be found very rarely 

 in the lower part of bed 13, but was not present in any of the other 

 beds. In my tables of fossils of 1874 I had most unluckily included 

 amongst supposed specimens of Holaster subglobosus the Holaster 

 nodulosus of Hebert and H. carinatus, Ag., which are present in beds 

 11, 12, and probably also flattened specimens (seen only in situ) of 

 Echinoconus, which occur rarely in beds 14 to 17. The result of my 

 researches since 1874 in these particular sections amounts broadly 

 to this — that I find reason for placing beds 13, 14, respectively a 

 stage higher in the Cretaceous series than I had at first supposed." 



I hope Mr. Meyer will soon be able to publish the results of his 

 recent researches in greater detail, as the zone of Bel. plenus appears 

 likely to become an important divisional line in the Cretaceous series. 



Jan. 8, 1879. A. J. JUKES-BROWNE. 



SIE R. GRIFFITH AND THE OLD RED SANDSTONE. 



Sir, — I find I have misrepresented Sir B. Griffith ; from my 

 conversation with him I imagined his statements in reference to 

 the Fintona, Curlew Mountain and Croagh Moyle rocks had not been 

 published ; while now I learn they had been published in 1843, 

 during the meeting of the British Association at Cork.. For this 

 correction I am indebted to the Bev. M. H. Close, President of the 

 Boyal Geological Society of Ireland. As that gentleman has in pre- 

 paration a history of Griffith's Map, it is unnecessary to say more 

 on the subject at present. G. Henry Kinahan. 



Ovoca, February 7th, 1879. 



ON TIIE FORMER CLIMATE IN THE POLAR REGIONS. 

 Sir, — Dr. Haughton's letter makes it look as if I had committed 

 an anachronism in saying that Dr. J. Evans had, in his opening 

 Presidential Address, defended his theory about changes of latitude 

 against arguments subsequently brought forward in the Section by 

 the Professor. It was, however, to a paper read by Dr. Haughton, 

 in April, 1878, at the Boyal Society, to which I referred. 



0. Fishek. 



Errata and Omissions. — In Mr. Lapworth's paper on the Tripartite Classifica- 

 tion of the Lower Palaeozoic Rocks, Geol. Mag., January, 1879. 

 After title insert — (Read before Edinburgh Geological Society, Dec. 19, 1878.) 



p. 3, line 1, for light read right. 



p. 3, line 40, for division read divisions. 



p. ]2, line 20, for it read them. 



