95 PEOCEEDIN&S OF THE GEOLOGICAL SOCIETY. 



Thomas Stewart, Esq., Assoc. M. Inst. C.E., Cape Town, were 

 elected Pellows of the Society. 



The List of Donations to the Library was read. 



The following communications were read : — 



1. "The Granitic and Schistose Eocks of IS'orthern Donegal." 

 By C. Callaway, D.Sc, P.G.S. 



2. " On Hollow Sphernlites and their occurrence in ancient 

 British Lavas." By Grenville A. J. Cole, Esq., E.G.S. 



Rock specimens and microscopic sections were exhibited by Dr. 

 Callaway and Mr. Grenville Cole in illustration of their papers. 



March 25, 1885. 



Prof. T. G. BoNOTiT, D.Sc, LL.D., F.E.S., President, in the Chair. 



Charles De Laune Eaunce de Laune, Esq., E.L.S., Sharsted Court, 

 Sittingboume, Eient ; and William Hill, Esq., Jun., The Maples, 

 Hitchin, Herts, were elected Eellows of the Society. 



The List of Donations to the Library was read. 



The following communications were read : — 



1. "On the Eelationship of Ulodendron, Lindley and Hutton, to 

 Lepidodendron, Sternberg, Bothrodendron, Lindley and Hutton, 

 Sigillaria, Brongniart, and Mhytidodendron, Boulay." By Robert 

 Kidston, Esq., F.G.S. 



[Abstract *.] 



The Author commenced by expressing an opinion that the 

 so-called genus Ulodendron of Lindley and Hutton comprised 

 specimens belonging to several species which were referred to 

 diflPerent genera. Unless the outer surface of the bark is well 

 preserved, stems of Clathrarian Sigillarue and Lejpidodendra are 

 undistinguishable ; but species of Ulodendron have been in several 

 -cases founded on decorticated examples, and distinguished by such 

 characters as the size of the Ulodendroid scar. The three species 

 which have furnished most of the specimens described as Uloden- 

 dron, and to the description of which the present paper was chiefly 

 devoted, are Lepidodendron Veltheimianum, Sternb., Sigillcma dis- 

 copTiora, Konig, sp. {=^U. majus and U. minus, Lindl. & Hutt.), and 

 B. Taylori, Carruthers, sp. 



* This paper has been withdrawn by permission of the Council. 



