276 Reviews — Liverpool Geological Society. 



Dr. Albert Wilmore contributes a " Note on the Zones of the 

 Carboniferous Limestone South of the Cruven Fault ", and Dr. Arthur 

 Vaughan describes and figures Clisiophijllum ingletonense, n.sp., a form 

 " with strong convergence towards Carcinophyllum, particularly in the 

 young stages ", and occurring in the basement beds (Co-Si) of Ingleton. 



VII. — Liverpool Geological Society. — The last part of the Pro- 

 ceedings (vol. xi, pt. ii, session the fifty-second, 1910-11) contains 

 a great deal about Triassic geology. Mr. W. Hewitt in his Presidential 

 Address, gives a comprehensive account of the present state of our 

 knowledge of the physical conditions under which the local Triassic 

 rocks were formed. The various theories are discussed and the more 

 important papers referred to, but, as Mr. Hewitt observes, the problem 

 is still an open one. Footprints in the Trias form the subject of 

 papers by Mr. H. C. Beasley and Mr. F. T. Maidwell. Mr. Beasley 

 deals with the group of footprints found at Storeton in 1910, and 

 from the new examples is able to write a fresh description of the 

 ' Gr ' (Chelonoid) forms. These Storeton ' G ' prints are not webbed, 

 but recently an undoubted example of webbing has been discovered 

 among the Ilhynchosauroid prints at Runcorn. Mr. F. T. Maidwell, 

 in his "Notes on the Footprints from the Keuper of Huncorn Hill ", 

 describes several of the ' D ' prints under the name Rhy)ichosauroides, 

 and founds the new species R. memhranipes. Some interesting 

 observations on webbed prints and the significance of their occurrence 

 in these rocks, are included in Mr. Maidwell's paper. 



The finer materials of Triassic rocks have been examined by 

 Messrs. C. B. Travis & W. H. Greenwood, who give their detailed 

 results in a paper on the mineralogical and chemical constitution of 

 the Triassic rocks at Wirral. These results are compared with those 

 obtained by workers in other areas, and the conclusions are of some 

 interest. The condition of the quartz tends to show that the bulk of 

 the material of the Wirral Trias was derived from granitoid rocks, 

 and a smaller proportion from sedimentary and volcanic rocks. The 

 two varieties of tourmaline, brown and blue, are considered to come 

 from different sources. On the whole, the authors think that the 

 Wirral Trias cannot luive been derived from the same source as that 

 of the deposits of the Trias in South-West England and the Midlands. 



The list of papers on the geology of the country around Liverpool 

 which was started by the late Mr. G. H. Morton is continued in this 

 part of the Proceedings to the year 1909, by Mr. W. Hewitt. 



VIII. — Proceedings of the Cheltenham Natural Science Society 

 FOR THE Session 1910-11. n.s., vol. i, pt. v, November, 1911. 

 Cheltenham : Norman, Sawyer & Co., Ltd. Price 1«. 



THP] useful account of " Brickearths, Pottery, and Brickmaking in 

 Gloucestershire", by L. Richardson and R. J. Webb, concludes 

 in this part of the Proceedings with details of the various tile-and 

 brick-clays in the Coal-measures and in the Old Red Sandstone. The 

 famous Cattybrook bricks are made from the Coal-measure clays of 

 this county ; and six localities are still worked, while eight are now 



