Reviews — P. Termier — The Evidence for Atlantis. 473 



The rocks in this area present quite normal characters; the 

 Wenlock Shale is 850 feet thick, and is composed of mudstones 

 below with sandy shales above, at the base of which the characteristic 

 calcareous concretions are found. Towards the summit it becomes 

 more sandy and passes iuto the Wenlock Limestone. This rock is 

 only 40 feet thick here and is composed of thin limestone bands with 

 sandy partings, and cannot be called a coral reef. It occurs in 

 isolated strips as it is much broken by the faulting, and has even 

 been pushed into the more yielding shale beds. 



The Ludlow Beds are 1,300 feet thick; they pass downwards 

 conformably into the underlying Wenlock, and are composed of 

 impure sandy shales followed by sandstones. There is no Aymestry 

 Limestone nor any sign of the Aymestry fauna, and the Ludlow rocks 

 cannot be divided into an upper and lower series. This great 

 thickness of Ludlow Beds at Usk shows a striking contrast to the 

 Tortworth inlier, where they have been in great part removed by 

 erosion. 



In the appendix by Dr. Cowper Heed several new species and 

 varieties are described, including new species of Chonetes ( C. ceratoides), 

 Pteronitella (P. inexpectata), Gosseletia (?) \_G. (?) Tatoneyf\, Pholadella 

 (P. McCoi/i), and new varieties of Proetus Stokesi, Murchison, and 

 Phacops Stokesi, Milne Edwards. 



The paper is illustrated by a geological map and two plates of 

 photographs of the fossils described by Dr. Cowper Heed. 



W. H. Wilcockson. 



IV. — Atlantis. By Pieeee Teemiee. Smithsonian Report for 1915, 



pp. 219-34. 



IK this publication, which is a translation of a lecture given before 

 the Institut Oceanographique of Paris on November 30, 1912, 

 the author puts forward the evidence in favour of accepting the 

 Platonian account of the destruction of Atlantis as materially true. 

 After giving a general account of the old legend, with quotations 

 from Plato's Tiniceus, the author reviews the geological and zoological 

 evidence for the former existence and recent disappearance of the 

 Atlantic Continent. He argues that land must have existed along 

 the lines of the Alpine and Hercynian folds, and also further south 

 along the northern border of the old Gondwanaland, and that this 

 land must have gradually foundered, the old E.-W. lines giving 

 place to the present N.-S. line, as shown by the bank which runs 

 from north to south down the centre of the Atlantic Ocean. This 

 bank, and the similar banks off the coast of Africa, are connected 

 with volcanic and seismological phenomena as shown by the volcanic 

 islands which are situated on them ; and the deeps on either side of 

 it bear the same relation to the volcanoes as do the deeps off the 

 western coast of America to the Cordillera of the Andes. The 

 presence of undisturbed Miocene beds in the Azores and Canaries 

 shows that land existed in the neighbourhood of these islands in 

 Miocene times, but the writer regards as the chief point in favour of 

 recent submergence the fact that a cable ship in 1898 dredged up 

 some fragments of tachylyte from the sea bottom about 500 miles 



