p2ihlished respectivg Antrim, Deny, &7c. 36 f 



T should not quit the Jlliiiia of Atitrim without men- 

 tioning, that Mr. D. p. 21, represents a clayey IVInjnstone 

 Gravel as prevalent on the plams and valle\8. Thai a con- 

 siderable tract of alluvial Sand is found at Shane's Castle 

 and other parts of the shons of Lough N ;Hh, p. 24 and 

 111: and whtnce probably, the variegated Cakedovy pebbles, 

 p. 110, are dcrivd : a clayey Gravel uear theCrunilm River, 

 two miles from its mouth, contained a mass of partly pctri' 

 Jied wood weighing 700 lbs., the outside being stone and 

 })arts of the interior still wood, Mr. Barton, ]). 51 and 100; 

 at Tradubach Bay on Lough Neagh, a piece weighing 

 200 lbs., wood outside and stone within, Mr. B. p. 99 ; at 

 Ahaness 1 m. S of the river Glenavy, a piece 150 lbs. 

 weight, now probably in the Museum of Trinity College, 

 Dublin, Mr. B. p. 96, and Mr. D. ]>. 109, Note'. On the 

 Six- mile River two miles from Lough Ncagh, specimens 

 are found, as much as a man can carry, the outsides of which 

 are wood, Mr. D. p. 55, and in other places wood which 

 has undergone no change, Mr. B. p. 39 ; specimens of 

 petrified wood being found in Gravel, eight or ten miles di- 

 stant from Lough Neagh, Mr. B. p. 103 : see also Mr. D.'s 

 account of the above, pages 105 to 1 1 1. Lapis syringoides 

 are found inDerry on the shore of the Lough, Mr. B. pages 

 74 and 75, perhaps the petrilied CoraUtes of Mr. D. p. 109. 

 Hazel Nuts petrified, are thrown up occasionally, by the 

 waves of the Lake or Lough, Mr. D. p. IO9 and 110, but 

 whose waters are denied the wonderful properties which, 

 ignorance and credulity had assigned them : Mr. B. shows, 

 p^ 130, that the petrified wood is not so generally Holly ^ 

 as had been asserted. At Ahaness a stratum oi hitinninated 

 Wood under blue and red Clay is found, Mr. B. p. 97 and 

 130, and in other places bordering on the Lough, Mr. D. 

 p. 90. 



some Valley Bogs, rest on Clay <n- any other substances, Within the Level 

 of the obstructions to the retreat of the Waters wladi occasioned them, yet 

 real Bogs and Mosses such asjhose in Derbyshire (wliicli 1 first examined 

 near Buxton, in 1797) perhaps invariably, rest on S'lnil, Grit-^tone, or sandy 

 ioam, a? mentioned in my Derbyshire Report i; 307, 308 and 3r2 r and in 

 which respect, the present aquatic vegetables of our Bogs, seent to differ ma- 

 terially from tlic imnieuse subaqueous crops of eiiincl races of plants, which 

 occasioned our Coa/-icams; which, according to my extensive observations 

 and inquiries among the practically informed on this subject, invariably rest, 

 immediately (liowever thin it may be), on infusible or Fire-Clay in some of 

 its various states of induration and perfection, as mentioned in my Report i. 

 p. 179; and into which fact I hope that Dr. R. v^W minutely inquire, in the 

 Collieries of Antrim and Tyrone, fee: as also, what is the exact direction of 

 all the sli)ies or length-way vertical joints in the (.oaI-:sanis, in those various 

 t'ollieries? Do they range KSE and WNW, as in and near Derbyshire (Re- 

 port i. 181), or in any other invariable directlou? 



Vol. 39. No. 1 69. May 1812. A a A 



