ON THR LOWEK tAL.?50Z01C ROCKS OF ENOLAND AND WALES. 123 



years a^o on the surface of the shale '" in the old roadway near Excava- 

 tion No. 24, some 250 yards to the east of the present exposure. 



Siimviary of Results. 



The Excavations detailed in this Report have proved : — 



(1) The existence of a section in the Cwms (No. 54), which is entirely 



confirmatory of those of the Quarry Ridge (Nos. 1 and 2). 



(2) The presence of Olenellus, sensu lato, in the Black Limestone, which 



bed may now be definitely assigned to the Lower Cambrian. 



(3) The presence iu the lowest known portion of the Lower Cambrian 



Sandstone (the Mottled and Greenish-grey sandstones) of a fauna 

 comparable with that of the Hollybush Sandstone of Malvern. 



(4) The presence in the Hill House Grits of Paradoxides intermedius 



Cobbold as well as that of Phjchoparia (Liostracus), sp. ci. lata Cobbold, 

 previously known, which two species are found together in the Comley 

 Breccia bed. 



The inference from (4) is that the two deposits denominated the 

 Breccia bed and the Hill House Grit are of the same age, though one of 

 them (the Breccia bed) rests directly upon the Lower Comley Sandstone, 

 while the other (the Hill House Grit) is separated from that Formation 

 by about 300 feet of Shales, Grits, and Conglomerate (the Quarry Ridge 

 Shale and Grit of the Dublin and subsequent Reports). 



The principal Results of previous ob.servations were summarised in 

 the Report to the Dundee Meeting." 



The writer desires to take this opportunity of acknowledging very 

 gratefully the assistance he has received from the Association in enabling 

 him to explore the Comley Section so much more fully than would have 

 been possible without excavation, and thus to establish a considerable 

 number of life zones in the Shropshire Cambrian Rocks. He is also 

 greatly indebted to Professor Lapworth for advice and other help 

 throughout the whole course of this investigation, and to Dr. Matley, Mr. 

 Philip Lake, Professor Groom and others for aid with the Palseontology. 



Stratigraphical Names. — Interim Report of the Committee, con- 

 sisting of Dr. J. E. Mark {Chairman), Dr. F. A. Bather 

 {Secretary), Professor Grenville Cole, Mr. Bernard 

 HoBSON, Dr. J. HoRNE, Professor Lebour, Dr. A. 

 Strahan, ami Professor W. W. Watts, appointed to con- 

 sider the preparation of a List of Stratigraphical Names 

 used in the British Isles, in connection ivith the Lexicon of 

 Stratigraphical Names in course of preparation hy the 

 International Geological Congress. 



In consequence of the war, it has not been possible for the Secretary 

 of this Committee to communicate further with the Secretary of the 

 Committee appointed by the International Geological Congress. It is, 

 therefore, impossible for the present to draw up a plan of operations. 

 The same reason rendered it inappropriate to act on the suggestion 



'" Rep. Brit. Assoc. 1909, Winnipeg (1910), p. 186, and footnote. 

 " Bep. Brit. Assoc. 1912, Dundee (1913), p. 142. 



