328 Reports and Proceedings — Geological Society of London. 



in the Allegheny Kiver. The deposits are called by the writer the 

 ' Phyllocarid Beds.' Additions and emendations to the original 

 diagnoses of the following genera and species are given : ^chino- 

 caris socialis, Beecher ; Tropidocaris, Tr. hicarinata, Beech er, Tr. 

 alternata, Beecher; JElymocaris, E. siliqua, Beecher; and two new 

 species of JEchinocaris are described. 



II.— May 14th, 1902.— Professor Charles Lapworth, LL.D., F.R.S., 

 President, in the Chair. 



The President referred in feeling terms to the recent calamitons 

 occurrences in the West Indies, and to the geological interest of the 

 phenomena. The Council had been considering in what way they 

 could best give expression to the sympathy of the Fellows, both 

 with our own Colonies and with their French neighbours, and had 

 requested Sir Archibald Geilde and himself to act as they thought 

 best in the matter. 



Professor Boyd Dawkins moved that the Fellows express their 

 sympathy with the sufferers in the two islands, and approve the 

 action taken by the Council. 



Mr. H. W. Monckton seconded the motion, which was carried. 



The following communications were read : — 



1. "On Pliocene Glacio-Fluviatile Conglomerates in Subalpine 

 France and Switzerland." By Charles S. Du Riche Preller, M.A., 

 Ph.D.. A.M.I.C.E., M.I.E.E., F.G.S. 



In a paper read before the Society in 1896 the author described 

 a variety of Deckenschotter deposits above, near, and below Zurich, 

 which, occurring both on the hills and at low levels of the valleys 

 of that district, tended to the conclusion that at the time of their 

 formation, towards the end of the Pliocene Period, the principal 

 valleys and lake-basins of Subalpine Switzerland were already 

 eroded approximately to their present depth. 



Further examination has, however, led him to recognize that the 

 low-level deposits, although in many respects not unlike Decken- 

 schotter, are the products of the younger or Pleistocene glaciation, 

 and that only the deposits in situ on the ridge of the hills can be 

 referred to the Pliocene glaciation of the Alps. 



In the present paper the author describes a number of further 

 deposits of typical Deckenschotter conglomerate recently examined 

 in the Aare and Rhine valleys, near the confluence of those rivers, 

 and shows that these, in conjunction with the Deckenschotter 

 deposits of the Zurich district, indicate the almost unbroken outline 

 of a Subalpine Deckenschotter cone, which extended from the base 

 of the Alps in a north-westerly direction over a distance of about 

 25 miles, and was formed by the waters of the retreating Rhine 

 (Western) glacier and its affluents on a molasse plateau, the upper 

 and lower ends of which were at the contours of 900 metres and 

 500 metres respectively. 



He further describes a series of Deckenschotter deposits examined 

 in the Rhone Yalley between Lausanne and Lyons, including the 



