ON PflOTOGRAPHS Of GEOLOGICAL INTEREST. 267 



♦Donegal. — Photographed by R. Welch, M.RJ.A., Lonsdale Street, 



Belfast. 1/1. 



Regd. 

 No. 



4778 (1434) Pollen Bay, Bally liffan, ' Calcreted ' seolian shelly sands. 1908. 



Inishowen. 



4779 (1435) Pollen Bay, Ballyliffan, „ „ „ 



Inishowen. 



4780 (5206) Pollen Bay Dunes. . . Natural arch in consolidated Eeolian shelly 



sands. 1908. 



4781 (11166) „ „ „ . . Ridge of calcreted ' sand. 1908. 



*DuBLiN. — Photographed hy R. Welch, M.R.I. A., Lonsdale Street, 



Belfast. 1/1. 



4782 ( 1669) Broad Bay, Lambay Island. Cliffs of Old Red Sandstone. 1906. 



4783 (1668) North Cliffs, Lambay. . „ „ „ „ 



GALVfAY.^Photographed by A. McI. Cleland, Green Road, Knock, 



Belfast. 1/2. 



4784 (C 11) Mushroom Rocks, near Eroded Carboniferous Limestone. 1904. 



MaycuUen. 



4785 (C 12) Mushroom Rocks, near „ „ „ „ 



MaycuUen. 



4786 (C 13) Mushroom Rocks, Bally- 



quirke Lough. 



4787 (C 14) Mushroom Rooks, Bally- „ „ „ „ 



quirke Lough. 



Rock Structures, &c. — Photographed by Godfrey Bingley, Thornie- 

 hurst, Headingley, Leeds. 1/2. 



4788 (6838) Withernsea. . . . Glaciated boulder. 1905. 



4789 (6889) „ . . . , 



Faunal Succession in the Garhoniferous Limestone {AvoniaTi) of the 

 British Isles. — Report of the Committee, consisting of Professor 

 J. W. Gregory (Chairman), Dr. A, Vaughan (Secretary), 

 Dr. Wheelton Hind, and Professor W. W. Watts, appointed 

 to enable Dr. A. Vaughan to continue his Researches thereon. 

 (Braion up by the Secretary.) 



The following work has been carried out : — 



I. — Faunal Work in connection with Dr. C, A, Matley's Concluding 

 Account of the Rush-Skerries Sequence. 



The re.sult3 of this investigation were presented to the Geological 

 Society in March of this year and are published in the August number 

 of the ' Quarterly Journal.' 



The interrelation of the Cyathaxonia- and Poszc?OTConi«/a-phases with 

 each other and with the normal Clisiophyllid development of the Upper 

 Avonian is herein discussed, and the possibility of constructing three 

 parallel zonal scales corresponding to these three bathymetric faunas is 

 adumbrated. 



In matters of local stratigraphy it is pointed out that the horizon of 

 the Rush Slates and Conglomerates is not yet satisfactorily determined, 



