VOL. XXVIII.J PHILOSOPHICAL TRANSACTIONS. 6/ 



examining them : but when they were found or taken up I cannot tell. I have 

 one, found the other day in an urn, but very imperfect ; what remains of the im- 

 pression looks more like British than Roman ; but by the shape of the coin and 

 metal it should be the latter, though I think it not easy to determine. 



It is pretty certain that the urns are Roman, and consequently the number 

 must denote a station or colony of that people : so I should be glad to hear 

 your thoughts and opinion of the place where that station was appointed, or 

 colony planted ; on what occasion, and at what time it might be placed there. 



Observations on Lough-Neagh in Ireland. By Francis Nevilly Esq. N° 337, 



art. 29, p. "260. 



As to the lake. Lough Neagh, so much talked of for its changing wood into 

 stone, which report is too much credited by some, who live near the Lough; 

 I can assure you there is no such petrifying quality in that water. I lived 

 14 years in Dungannon, within 5 miles of it, and was very often there, about 

 the skirts, for many miles, and in a boat upon it several times. I have taken 

 the survey of a great part of its shore, when I drew the scheme for making the 

 Glan-bog navigable, from the Lough through part of the upper Bann, to 

 Newry ; which was done at a time when the waters were very low, and a large 

 strand left in several places. Many trees lay in the verge of the lough, some 

 of which might have lain there many centuries, having been overturned by the 

 lough's encroaching on the land, where great woods had grown ; and many 

 roots of great trees were standing in their proper places, where the water had 

 prevailed on the land, and no alteration in the wood at all, but it was firm^ 

 sound wood, without any petrifaction. 



I have had an occasion, among other things, to talk to Mr. Brownlow on 

 this subject, a great part of whose estate lies contiguous to the lough ; and he 

 told me, that he believed that theie was not any petrifying quality in the water; 

 for that he had made several trials, and had holly stakes driven into the ground 

 within the verge of the lough, and that some of them continued there many 

 years, but without any alteration. 



And yet there have been great quantities of such sort of stone, reseiribling 

 wood, found on the strand, after great floods and storms of wind, which have 

 put the lough into a ferment ; the waves breaking down the banks, encroaching 

 on the land, and tumbling over trees, by which these stones are discovered : 

 and if ever they were wood, they have been petrified by the earth, and not by 

 the water ; of which kind I have seen several pieces, large and small, some like 

 oak, some ash, and some like holly with bark, grain and knots like wood ; so 



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