92 THE GEOLOGIST. 



" Clay Ironstone Nodules from Arigna.—lsletm of five analyses: — 



Protoxide of iron 51*36 



Lime • • !; 59 



Magnesia 



Alumina 0'98 



Insoluble clay 12" 82 



Carbonic acid 31*33 



100-00 



And this contains 40 per cent, of metallic iron. 



" The loss by calcining, the iron remaining as protoxide, should be 



in average 31-33 per cent. ; and the calcined ore should consist of 



100 parts of 



Iron 58'2 



Oxygen 16'6 



Lime and magnesia 5*1 



Clay • 201 



100 00" 



(Re© Sir E. Kane's ' Industrial Eesources of Ireland,' p. 136.) 



COEEESPOKDENCE. 



Crocodilian Remains in the Scottish " Old Red." 



Sir, — Observing that the report of a Scottish crocodile having been 

 found in the Old Eed Sandstones of Morayshire has been commented on 

 in your Notes and Queries for February, I think it right to state that no 

 reptilian remains have been recovered from any of the sandstones of that 

 county, of whatever age, with the exception of those of the well-known 

 Telerpeton, Stagonolepis, and Hyperodapedon. 



The stone containing the first of these, the Telerpeton Elginense, was got 

 From a quarry near the Loch of Spynie, some two to three miles south of 

 Elgin, by the late Mr. Patrick Dulf, and is now in my possession. It is 

 described and figured by the late Dr. Mantell (Jan., 1852), in a paper 

 contained in the eighth volume of the 'Geological Journal,' as a small 

 lacertian reptile, about four and a half inches in length. 



The Stagonolepis Robertsoni has been long known, and was so named 

 by Agassi/, and is by him described, in the ' Poiss. Foss. du Yieux Gres 

 Rouge,' as a ganoid fish. The discovery of many fragments of bones since 

 has enabled Professor Huxley to fix the true nature of these remains. The 

 Stagonolepis is described by him, in the fifteenth volume of the ' Geological 

 Journal ' (1858), as a reptile having considerable affinities to the crocodile, 

 and as Laving reached from 16 to 18 feet in length. Many remains of 

 bones and scutes belonging to this creature have been found in a quarry 

 at Lossiemouth, some live miles south of Elgin, and are preserved in dif- 

 ferent museums, as in that of Elgin, the Museum of the Eoyal School of 

 Mines in Jermyn Street, etc. 



The remains of Hyperodatpedon Gordon! were got from the same quarry 



