Reviews — Brief Notices. 431 



Government Geologist, Mr. A. Gibb Maitland, we gather that the 

 most important structural and topographical features of Sandstone 

 are the so-called ' jasper bars ' which traverse the field in a general 

 east and west direction. They pass imperceptibly into graphite 

 schists below the ground, and from microscopical examination have 

 evidently suffered intense shearing, being in places represented by 

 chlorite-schists. Including the index, this work comprises sixty-six 

 pages of text, maps, plans, etc., together with occasional micro- 

 photographs exhibiting rock structures. 



6. — Geological Survey or Ireland. 



Explanatory Memoir to Sheet 58, illustrating parts of the 

 Counties of Armagh, Fermanagh, and Monaghan. Second edition. 

 By T. Hallissy ; with Petrographic Notes by G. A. J. Cole. 

 Department of Agriculture and Technical Instruction for Ireland, 

 1914. pp. i-iv, 1-26, with a coloured geological map, scale 

 10 miles to 3f inches. Price 3id. 



The sedimentary rocks of this region are recognized as Ordovician 

 (Lower Silurian), which include the Llandilo and Caradoc Beds; 

 Gotlandian (Upper Silurian), Llandovery Beds ; Carboniferous, 

 embracing Lower Limestone, Calp or Middle Limestone, Upper 

 Limestone, and Yoredale Series ; Post-Pliocene and Recent, 

 including Glacial Drift, Peat, and Alluvium. Ample notes are given 

 on the palseontological facies of the Silurian and Carboniferous 

 formations, the fossils from the latter having been determined by 

 Dr. G. W. Lee and the late W. H. Baily. The mines and minei'als 

 of the district, as well as the soils and agriculture, form further 

 sections of this report. Its extremely low price should commend this 

 excellent work to all interested in Irish geology. 



7. A Review of Mining Operations in the State of South Australia 



DURING THE HALF-YEAR ENDED DECEMBER 31, 1914. No. 21. 



8vo ; pp.35. Adelaide, 1915. 



This is mainly of statistical interest to mining experts. There are, 

 however, certain particulars given of boring operations which have 

 been carried out at the Poona and Mattapara Mines, Moonta, by 

 Mr. A. W. Matthews, and also at Calcookra Mine near Franklin 

 Harbour by Mr. C. F. Duffield, which illustrate the rock structures 

 of those districts. Mr. R. Lockhart Jack (Assistant Government 

 Geologist) refers to the discovery of Alunite deposits on Section 310 

 at Hundred of Napperley, of which assays and analyses by 

 W. S. Chapman are given. The Government Geologist, Mr. L. K. 

 "Ward, contributes a note on the cobalt deposits. 



8. The Geology of the Appleby District. By Dr. John Edward 

 Marr, M. A., F.R.S. With special reference to the area visited during 

 the long excursion of 1907 by the London Geologists' Association. 

 (Reprinted from the Proceedings of the Geologists' Association by 

 permission of the Council of the Association.) Notes on the Geology 

 of the Vale of Eden, by Professor P. F. Kendall. Appendix on the 

 Igneous Rocks, by Alfred Harker. 8vo ; pp. 27, with geological 



