WOKKS ON GEOLOGY, MINEEAJ.OGY, AND TAL^EONTOLOGY OF WALES. 407 



1712. 



(115) Llhwyd, E. a Letter containing several Observations in 

 Natural History, made in his Travels thro' Wales. Vliil. Trans, vol. 

 xxvii. (No. 334), p. 462. 



(116) Some farther Observations relating to the Natural His- 

 tory of Wales. Ibid. p. 4G7. 



(117) A Letter giv^ing a farther Account of what he met with 



remarkable in Natural History ancl Antiquities in his Travels thro' 

 Wales. Ihkl. (No. 335), p. 500. 



1714. 



(118) Lhwyd, E. Extracts of several Letters containing Observations 

 in Natural History and Antiquities, made in. his Travels thro' Wales, &c. 

 Fliil. Trans, vol. xxviii. p. 93. 



(119) An Extract of a Letter containing some remarks on an 



Undescribed Plant, and other Particulars, observed in Wales. Ihih p. 

 275. 



1723. 



(120) Rowlands, H. Mona Antiqua Restaurata. An Archaeological 

 Discourse on the Antiquities, Natural and Historical, of the Isle of 

 Anglesey. 4to. Dublin. Another ed. 4to. Lond., in 1766. 



1756. 



(121) Linden, Dr. D. W. A Treatise on the Three Medicinal Mineral 

 Waters at Llandrindod, in Radnorshire, South Wales, with some Remarks 

 on Mineral and Fossil Mixtures, in their Native Veins and Beds ; At least 

 as far as respects Their Influence on Water. 8vo. Lond. 



1767. 



(122) Matthews, E. An Account of the Sinking of a River near 

 Pontypool in Monmouthshire. Pliil. Trans, vol. xlix (part 2), p. 547. 



(123) Pennant, T. An Account of some Fungitse and other curious 

 coralloid fossil Bodies. Ibid. p. 513. 



1758. 



(124) Da Costa, E. M. An Account of the Impressions of Plants on 

 the Slates of Coals. Fldl. Trans, vol. 1. p. 228. 



1761. 



(125) Rutty, Dr. J. Of the vitriolic Waters of Amlwch, in the Isle 

 of Anglesey ; with occasional Remarks on the Hartfell Spaw .... and 

 their Comparison with other Waters of the same Class. Phil. Trans. 

 vol. li. p. 470. 



1773. 



(126) MoKKis, Dr. M. A short Account of some Specimens of native 

 Lead found in a Mine of Monmouthshire. Fhil. Trans, vol. Ixiil. (part 1), 

 p. 20. 



1778-83. 



(127) Pennant, T. A Tour In Wales. (Mineral Tract, &c. pp. 415- 

 424.) 4to. Lond. 



