628 Correspondence — 31r. HutchingH — Mr. A. J. Jukes-Browne. 



the unexplored depths of the fissure is a matter of pure conjecture. 

 Whether a repetition of the finds in the fissure at Ray Gill, and in 

 the lower cave earth of the Victoria Cave, with the addition of 

 Palaeolithic man, must be left for future exploration to determine. 



Your Committee request reappointment, and that a grant of £25 

 be made to assist in the further exploration of the cave. 



coK-iaiEisiPOD^rnDED^rGs. 



NOTES ON CONISTON FLAGS. 



Sir, — May I be allowed to point out that in my " Note on the 

 Coniston Flags " in your last issue, the printer makes it appear that 

 in microscopic work I made use of sections rather larger than are 

 usually employed. Speaking of the garnets (p. 460) , he makes me 

 say that this mineral appears and disappears " within a few yards 

 along the slide and a few feet across it." 



Messrs. Voigt and Hochgesang, who make my sections for me, 

 have very great skill in our work, but I do not think they could 

 quite make slides of the size here indicated ! What I wi-ote was 

 strike, where the printer has put slide. W. Maynakd Hutchings. 



Newcastle-on-Tyne, Oct. 7, 1891. 



CONCEETIONS IN MAGNESIAN LIMESTONE. 



SiK, — Has not Mr. Garwood omitted to consider a third possible 

 method of origin for these and similar concretions? Infiltration and 

 Segregation are not the only ways in which concretions are formed. 

 Why should not the carbonate of lime have been obtained from the 

 water above, while that particular bed was being deposited ? It is 

 not necessary to suppose that the carbonate of lime must have been 

 deposited in the bed and then segregated ; it is surely more likely 

 that it was in solution in the water above, and was precipitated by 

 chemical action. The ammonia or ammoniacal compounds evolved 

 from decaying organic matter might be the initial cause. 



A. J. Jukes Browne. 



With deep regret we record the following deaths : — 



Charles Smith Wilkinson, F.G.S., F.L.S., V.P.L.S., N.S.W., the 

 Government Geologist for New South Wales, who died at Sydney 

 on 23rd August, 1891, aged 4.7 years. 



Philip Herbert Carpenter, D.Sc. (Camb.), F.R.S., F L.S., 

 Science-Master of Eton College, who died on 21st October, 1891, 

 aged 39 years. 



We hope to publish a fuller notice of these eminent geologists 

 and palaeontologists next month. 



