43 Correspondence. 



glacial observer may visit the locality some day, and give us the 

 benefit of his opinion upon it. In the meantime, as Mr. Pengelly, 

 in his letter in your last number, agrees in the correctness of my 

 description of the facts, perhaps he will favour us with his ideas as 

 to their origin, for I certainly have never seen anything like them 

 except on a so-called glaciated surface. — ^Yours truly, 



Dublin, Dec. 4, 1866. J, Beete Jtjkes. 



DE. FEAAS ON PEE-HISTOEIC SETTLEMENTS. 

 To the Editor of the GEOLoaiCAL Magazine. 



Sir, — In your impression of this month (page 550), Dr. Fraas 

 concludes an interesting article on Pre-historic Settlements with two 

 remarks, thus : " And, secondly, that the discovery at Schussenried 

 indicates a totally different climate, such as now begins at 70 degrees 

 of north latitude." But he gives a fact which fully contradicts this 

 theory. The remains of horses were found at Schussenried. " In one 

 case the skuU is still nearly perfect, and it belonged to a species with 

 a large head ; while certain bones of the extremities indicate a strong, 

 hony, and powerful animal. The brain cavity has been opened, the 

 vertebra had been split, and the bones containing marrow had been 

 broken in pieces, so that there can be no doubt of horse-flesh having 

 been one of the table delicacies of the ancient Swabians." Are 

 there wild horses at the North Cape now f or in Nova Zembla ? or at 

 the Samoyede Promontory f 



I have the honour to be, Sir, your obedient servant, 



Geokge Greenwood, Colonel. 



Bbookwood Park, Alresford, 

 December 7th, 1866. 



THE DEVONIAN EOCKS OF NOETH DEYON. 

 To the Editor of the Geological Magazine. 



Dear Sir, — ^I wish I had power at present to enter the lists 

 on the new issue raised by Professor Jukes as to the integrity of the 

 Devonian system. It seems so odd to try to explain away a series of 

 rocks which must have some place, and are distinguished, as all 

 know, by a peculiar set of fossils. Though the Devonian has not 

 many striking peculiar types of shells, it has some quite distinct, 

 while the mass of its species are undoubtedly peculiar, and neither 

 Silurian nor Carboniferous. And it is 10,000 feet thick ! 



Meanwhile, till 1 have more opportunity, let me just keep your 

 younger readers in possession of the facts that in North Devon, pro- 

 ceeding southwards from Linton and the N. Foreland to the 

 Ctdm-measures, there are the following distinct series, which Pro- 

 fessor Jukes rather summarily groups into Coal, Carboniferous-slate, 

 and Old Eed. I know " a rose by any other name will smell as 

 sweet," but I prefer the well-known names : — 



1. Slates and sandstones of Linton and the North Foreland (Lower 

 Devonian). 



2. Grey slates and limestones of Combe Martin and Ilfracombe 

 (Middle Devonian). 



