288 Corresjpondence—A. Sfraltan — S. R. Haselhiirst. 



A CORRECTION IN THE PRESIDENT'S ADDRESS. 

 Sir, — Will you allow me to correct through the medium of your 

 pages an error in a table of borings which forms part of my recent 

 address to the Geological Society. On p. Ixxxix the boring at 

 Meux Brewery is said to have passed through 64 feet of Lower 

 Greensand. The beds referred to, though originally described as 

 Lower Greensand, were shown by Professor Judd in 1884 to belong 

 to the Great Oolite Series. There has never been any doubt about 

 the correctness of Professor Judd's determination, and the error is 

 purely one of transcription. ^ Strahan. 



Geological Survey and Museum, 



Jermyn Street, London, S.W. 

 May 13, 1913. 



SEPTARIAN STRUCTURE. 



Sir. — I have read with much interest the article by Dr. Davies in 

 your March issue on " The Origin of Septarian Structure ". I should 

 like to say that I have been conducting researches on ' rock 

 structures' — including septarian structure — for over two years. 

 My work is nearly completed, and I hope to publish it shortly. 

 I can only say at this juncture that I have had unique opportunity 

 of observing enormous septarian nodules in situ, and hope to show 

 their relationship to the adjacent rock as pointed out by l)r. Davies. 

 Up to the present, by suitable devices I have been able to make 

 certain rock structures closely allied to septarian structure. An 

 account of these also I hope to submit shortly. I should like to 

 put on record my indebtedness to W. Whitaker, Esq., F.R.S., 

 H. B. Woodward, Esq., F.R.S. , Mr. G. W. Butler, Mr. Lionel 

 Walmsley, Professors Garwood, Bonney, and Cole, and others, who 

 have been so kind as to help me with ' raw material' and criticism. 



S. Rennie Hasklhurst. 



9 York Terrace, North Shields. 



3VCISCE!IL.31.^^nsrE}OTJS. 



International Geological Congkess, Toronto, August 7 to 14, 

 1913. — At a meeting of the Geological Society of London, April 9, 

 a letter was read from Professor F. D. Adams, President of the 

 Twelfth Intel-national Geological Congress, expressing the hope that 

 Fellows of the Society and British geologists in general would be 

 largely represented at the Congress which is to be held in Canada 

 next August. He added that every endeavour is being used to make 

 the Congress a success, and that excursions have been arranged to 

 almost every accessible part of the Dominion. 



Appointments to the Stafe of the South African School of 

 Mines and Technology, Johannesburg. — The Council of the South 

 African School of Mines and Technology has made the following 

 appointments to the Staff : Dr. G. S. Corstorphine, consulting 

 geologist, of Johannesburg, to be Principal of the School and 

 Professor of Economic Geology ; Mr. J. S. Cellier, mining engineer, 

 of Johannesburg, to be Professor of Mining. 



