WORKS ON GEOLOGY, MINERALOGY, AND PALEONTOLOGY OF WALES. 435 



(642) Ramsay, Prof. A. C. On the River-courses of England and 

 Wales. Ihid. p. 148. 



(643) RiCKETTS, Dr. C. Valleys, Deltas, Bays, and Estuaries. (Pre- 

 sident's Address.) Proc. Liverpool Geol. 80c. session 1871-2. 



(644) Riley, E. The Manufacture of Iron and Steel. (Analysis of 

 Welsh Ironstone, p. 534.) Quart. Journ. Chem. Hoc. ser. 2, vol. s. p. 533. 



(645) ScHEurvER-KESTNEK, A., and C. Meuniek. On the Calorific Value 

 and Composition of two Welsh Coals (from Oomptes Benclus, Ixxiii. 1061). 

 Ibid. p. 91. 



(646) Symonds, Rev. W. S. On a New Fish-spine from the Lower 

 Old Red Sandstone of Hay, Breconshire. Bep. Brit. Assoc, for .1871, 

 Sections, p. 110. 



(647) Recoi'ds of the Rocks; or Notes on the Geology .... 



of North and South Wales, Devon, and Cornwall. Svo. Land. 



(648) Thomas, D. On ' The Avon Valley Mineral District.' Proc. S. 

 Wales Inst. Ew/. vol. vii. (No. 6) p. 317. 



(649) Vivian, W. The Mwyndy Mines. Trans. Cardiff Nat. Soc. vol. 

 iii. [pt. 1] p. 79. 



(650) Rocks— Do they Grow? Ibid. p. 75, pi. 3 [N. Wales]. 



(651) Woodward, H. A Monograph of the British Fossil Crustacea, 

 belonging to the Order Merostomata. Part 4. (Wales, pp. 124-126.) 

 Paloiontoqrapli. Soc. 4to. Lond. 



1873. 



(652) Anon. The Slate Quarries of North Wales. Reprinted from 

 the Carnarvon and Denbigh Herald. 



(653) Beckett, H. The Geology of the Minora District. Travis. 

 Several Valley Nat. Field Club, 1865-1870, p. 85. 



(654) Brady, H. B. On Archaediscus Karreri, a New Type of Car- 

 boniferous Foraminifera. Ann. Nat. Hist. ser. 4, vol. xii. p. 286. 



(655) Carruthers, W. On Halonia of Lindley and Hutton, and 

 Cyclocladia of Goldenberg. (S. Wales, fig. 3.) Geol. Mag. vol. x. p. 145. 



(656) Davies, D. C. On the Overlapping of Several Geological For- 

 mations on the North Wales Border. Proc. Geol. Assoc, vol. ii. No. 8,p. 299. 



(657) On Coal Seams in the Permian, at Ifton, Shropshire 



(refers to Wales). Ibid. vol. iii. No. 3, p. 138. 



(658) Hicks, H. On the Tremadoc Rocks in the Neighbourhood of 

 St. David's, South Wales, and their Fossil Contents. Quart. Journ. Geol. 

 Soc. vol. xxix. p. 39. [See Bep. Brit. Assoc, for 1872, Sections, p. 107 

 (1873). ? Abstract of part of above.] 



(659) On the Classification of the Cambrian and Silurian Rocks. 



Proc. Geol. Assoc, vol. iii. No. 3, p. 99, table. 



(660) HoPKiNSON, J. On the Graptolites of the Arenig Rocks of St. 

 David's. Proc. Liverpool Geol. Soc. session 14, p. 36 ; Bep. Brit. Assoc. 

 for 1872, Sections, p. 107; and Geol. Mag. vol. ix. p. 467 (1872). 



(661) KiNGSLET, W. On certain facts connected with the wasting 

 and final disappearance of the Glaciers of North Wales. Proc. Camb. 

 Phil. Soc. part xiv. pp. 283-285. 



_ (662) Lankester, E. R. On Holaspis sericeus, and on the Relation- 

 ships of the Fish-genera Pteraspis, Cyathaspis, and Scaphaspis [Mon- 

 mouthshire]. Geol. Mag. vol. x. p. 241. 



(663) Lee, J. E. Notice of Veins or Fissnres in the Keuper, filled 

 with Rha^tic Bone-bed, at Goldclifie, in Monmouthshire. Bep. Brit. Assoc. 

 for 1872, Sections, p. 116. 



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