576 Conr-'^jjondcnce — Sir. W. Dawson — Mr. T. Mellard Reade, 



was seen in a cliff. Upon looking also at the passage to which he 

 refers in a former number of the Magazine, I find a " quan-y " 

 mentioned, and it is stated that " the cliffs are for the most part 

 abrupt, and can only be studied b}'- the aid of a boat." There is, 

 however, no difficulty in walking to the sj)ot which I visited, and in 

 viewing the cliff from the rocks at low water. Perhaps the same 

 break in the strata can be seen at two neighbouring localities, and 

 even if it should be, as Mr. Woodward thinks, due mei'ely to a fault, 

 still, as he justly observes, the bearing of the phenomena upon the 

 question of cleavage " is in no way affected." 



My diagram -was made from a photograph, which shows likewise 

 the "raised beach." 0. Fisher. 



Harlton, Cambridge, 4:th Nov. 



ADDITIONAL NOTE TO SIR WILLIAM DAWSON'S PAPER ON THE 

 GEOLOGY OF EGYPT. 

 Sir, — In Number IV. of these notes, that on the Crystalline Eocks 

 of Upper Egypt, I have mentioned the apparent absence of limestone 

 from the Laurentian series as seen at Assouan. I should have added, 

 however, that some of the crumbling schists seen in the low land 

 east of the railway cutting resembled very closely the calcareous 

 schists associated with the Granville bed of Limestone on the 

 Ottawa River, and gave the impression that Crystalline Limestone 

 might not improbably occur in that vicinity. 

 Additional Errata. 

 Page 440— line 3rd from top, for " of " read for. 

 Page 441 — line 9 from bottom, for " two " read also. 

 Page 442 — line 9 from top, for " cones " read cover. 



J. W. Dawson. 



UNDER WHAT CIRCUMSTANCES IS AN ISLAND TO BE CON- 

 SIDERED » OCEANIC " ? 



Sir, — If I correctly apprehend Mr. Fisher's reasoning, it is im- 

 possible to determine whether an island is " Oceanic" or not until it 

 be known whether at any period in its geological history it has been 

 connected with an existing continent. This is unfortunate ; for the 

 advocates of the permanency of oceans and continents insist that 

 " oceanic islands " throw great light upon the problem. It would 

 appear that they have been, as I pointed out in my first communica- 

 tion, arguing in a circle and from " phrases," not ascertained facts. 



Park Corner, Blundbllsands, T. MbllarD Eeade. 



Nov. Qth, 1884. 



We regret to record the deaths of three well-known geologists — 

 Mr. Robert Alfred C. Godwin-Austen, B.A., F.R.S., F.G.S., of 

 Shalford House, Guildford, on the 25th inst., in his 76th year ; Dr. 

 Thomas Wright, F.R.S., F.G.S., on the 17th inst., at St. Margaret's 

 Terrace, Cheltenham, also in his 76th year; and Mr. (late Prof.) 

 James Buckraan, F.G.S., F.L.S., of Bradford- Abbas, Sherborne, 

 Dorset, on the 21st inst. 



