puliished respecting Antrim, Derry, &c. 273 



and fibrot'.s, in beds not exceeding two feet thick, in the 

 Forth and Woodburn vales and the shores of Garnckteraus, 

 Dr. D. pref. vii. in the Forth vale, and on the Coast of 

 Belfast (Dr, R. vol. xxxv. p. 373) and thence to Caslle- 

 chichester in Magee Isle Mr. D. p. 7-2, and at Megabuy- 

 hill (in searching for Coals!) in Maheramesk, Mr. D. 

 p. 74 : the gypsum having been called Talc by Mr. harton 

 p. 106. 



A puttv-like substance found In the Red Clay, often la- 

 minated, fine and most unctious to the feel (Mr. D. p. 69)> 

 is perhaps a kind of Fullers' earth. 



Salt-Springs (indicative, no doubt, of Rock Salt beds in 

 the Marl belou) ; the strongest in Ireland is on Noah Dal- 

 way;s Estate near Carrickfergus, Dr. D. says prtf. vii. At 

 Ballyhill, and at Red Hall in Magee Isle, there are pure, 

 but not strong salt springs, Mr. D. p. 142. 



Mineral Springs (purying nitrous) in marley Clay at 

 K'llroot, and near Carrickfergus, Mr. D. p. 139. 



Sandstone, variegated, and containing clay galls, is said 

 to be lowest stratum seen, (dipping W) on the beach at 

 Ringin point by Dr. D. pref p. vi. ''Sandstones of dif- 

 ferent ttilours, different degrees of hardness, and differing 

 in the size of the grains which enter into their composition, 

 form the grand basis of this County. They appear at the 

 southern extremity of it near Spencer's Bridge, where it 

 joins the County of Down. From thence they may be 

 traced along the whole valley to Belfast and along the shore 

 to Carrickfergus, a tract of not jess than twenty-two miles," 

 Mr. D. p. 91 ; and at Whitehouse Point, Dr. R. vol. xxxv. 

 p. 373. " The depth, to which the Sandstones go, is very 

 great and quite uncertain ; this has been tried in many 

 places near Lisburn, where after boring near 200 feet, the 

 undertakmg has been abandoned : and at the Freestone 

 Quarry at Scraba in the County of Down 450 feet have been 

 bored through without success," Mr. D. p. 92. The sur- 

 face of this Firatum m.ikes a sandy soil W of the Lagan, 

 from Maize Course to near Helfast, p. 23. " A fine section 

 of this sandstone may be seen at Macedon Point, arranged 

 in manv-colourcd stripes, and cut by vertical veins of an 

 unctious argillaceous substance, resembling Fullers' Earth," 

 Dr. D. pref. vii. " On the western shores of Cushendall 

 Bay, we meet with a red Sandstone, in beds five or six feet 

 thick, dipping to the E (stratu/a, probably?) at a high an- 

 gle;" " a curious breccia or puddingstone consisting of 

 rounded pebbles of quartz imbedded in a red sandstone 

 cement : the caven-ed Ruck, on which Red Bay Castle 



stands. 



