438 Correspondence — Rev. 0, Fisher. 



stratified rocks above, indurating the latter, but not contorting 

 them. 



The next evening meeting of the Society will be held on No- 

 vember 11th. 



C0I^;I^:Es:P0Is^lDE3^CE- 



ON THE STRATA, NEAE ELY. 



Sir, — Mr. Seeley's humorous communication in your August 

 Number, p. 347, has called attention to a paper which I read at 

 Cambridge more than eighteen months ago, but which has only quite 

 lately been printed. Thinking any interest it might have had 

 would have passed away, I have hitherto sent out no copies of it, 

 but I now enclose one to you.^ 



It is fortunate for Cambridge men that they have so near them 

 a section on which differences of opinion may exist; and, if ever 

 the old system of the schools should be revived, a lively disputation 

 might be held in excellent dog-latin on Eoswell pit, at Ely. 



This is one of those cases where any one who wishes to form an 

 opinion must go and see for himself. Mr. Seeley and his class of 

 students may come to one conclusion, and other observers may 

 surely differ from them without offence. 



0. FISHER. 

 Harlton, Cambridge, 



Wi August, 1868. 



THE CHALK OF ANTRIM. 



Sir, — It will no doubt be a source of much pleasure to many of 

 your readers to find my friend Professor Jukes entering an appear- 

 ance at last for the geology of the North of Ireland, and giving us 

 the first instalment, as he did, upon a subject of great interest in 

 your last number. I have no fear but that, in his hands, and 

 those of Mr. Du Noyer, the subject will be exhausted. 



Permit me, however, as an observer here to say a word, and ask 

 for some little more light before we abandon, or even finally adopt, 

 the received theory upon the subject of Professor Jukes's article. The 

 phenomena alluded to are seen near this place, where the white lime- 

 stone occurs with the basalt of Benyevenagh, etc., near the mouth of 

 the Foyle. Now I do think that the concentric coloured bands of the 

 flints may hereafter admit of some better explanation than that 

 of the action of heat, but I object to the deduction of Professor Jukes 

 from the observed facts. 



He argues that the basalt (4 in his diagram) could not have indurated 

 the limestone without altering the lignite and clay, and he quotes in 

 the P.S. an experiment, showing that the lignite was so volatile, 

 when treated with red heat in a platinum capsule, as to lose 75.8 per 

 cent, of its weight. 



^ We have reprinted it at p. 407 of the present Number, so that our readers have 

 now the entire case before them as it stands. — Edit. 



