Kane — Additional Researches on Black Pic/'s l)yke. 543 



ditch diverging from " the main work," and hounding an enclosure, one side 

 of which consisted of the " great ditch " itself. This would be an exactly 

 analogous arrangement to that of the camps of Maesknowe and Stantonbury, 

 which lie along the entrenchment of the Wansdyke in England, and also to 

 others on Offa's Dyke, to which reference was made in my former paper.' 



The following measurements of the Great Ditch are given, and for com- 

 parison I have also put down those given in Canon Lett's description of such 

 of these of the Dorsey camp which are still surviving : — 



MS. OF 1707, "The Great Ditch." ^^^^- ^'^^°^ ^^'^■^• 



The Dorsey. 



" Ditch 15 yds. thick at bottom " = 45 ft. _ 



(Probably base of main rampart.) 



" 9 yds. liigh where highest, 6 commonly." = 27 to 18 ft. 23 ft. 



" The trenches at each side of equal depth to it." 



(The top of central vallum seems to be on a level 



with the top of the side ramparts.) 



"and 4i yds. wide at bottom," = 13-6 ft. 12 ft. 



" and 22 yds. at top." = 66 ft. _ 



(Probably this means from the middle and top of 



the central rampart to top of the outer.) 



" The outward brink of the one trench to the outward 



of the other is 44 yds. over." = 132 ft. 120 ft. 



(I take this to mean the extreme width of the 



whole work from out to out. It corresponds 



with double of the above 66 ft.) 



(Canon I^ett states that at present the outer 



ramparts each measure 5 ft. high and 12 ft. 



wide at base.) 5 ft. x 12 ft. 



The contents of this ms. of 1707 show that my forecast that the entrench- 

 ments ran round Slieve Gullion to Meigh, and joined the Dane's Cast, was 

 incorrect as to the point of junction, but they indicate that they continued to 

 the iST.E. round the mountain to the Glen Meadow, near Goragh Wood, and 

 there joined " the Dane's Cast."= It would, therefore, seem that Emania was 

 provided with a triple line of defences against invasion from the south. 

 Firstly, the ramparts of the " Dane's Cast " running northward from Meigh, 

 near Newry, along the western slopes of Glen Eee to Lough Shark, and 



1 "Black Pig's Dyke "-Proc. R.I.A., vol. xxvii, Sect. C, No. 14, pp. 306, 307. 



2 See note on p. 563. 



