Proceedings of I) i^h Societies. 117 



those species most freq^uently brouj^lit uikUt our observation. Slic also 

 showed the fatal beauties and 1)rilliant colouriii^^'s of the ])()is<mous kinds 

 when compared with those which are edible. Her personal observations 

 on fungi in fish were most interesting. Mr. O'vSullivan gave his ex- 

 periences of rust on wheat. 



March 15th.— The President, Prof. Marcus IIartoo, in the chair. 

 The President called attention to the microscopic a^jpearance of fish- 

 scales as a means of identifying fish, and referred to a case re])orted in 

 the last number of the Field, where, at Youghal, a number <d" salmon 

 poachers were convicted, the microscope being used in court to de- 

 monstrate the characters of the scales to the bench, 



Mr. Bennett exhibited Hyuicnophyllum tiinhrid'^ensc from (VlengarifTe. 



Miss Martin exhibited a rare coral dredged by the Rev. W. S. Oreen, 

 off the coast of Cork in 1890. 



The President announced that Mr. T. Dillon had undertaken to edit 

 notes for a paper on the "Kartli worms of Cork," kindly .sent by the Rev. 

 Hilderic Friend. 



Mr. T. FarringTon, F.C.S., read a paper "On the Dolomite or Mag- 

 nesian Ivimestone of Cork," giving a full description of its mode of 

 occurrence, characters, and chemical analysis. He suggested that in 

 post- Carboniferous times, probably Permian, after the denudation of the 

 Coal Measures, and the dynamic action which had determined the pre- 

 sent ridges and troughs, the fissured exposed surface of the limestone 

 was depressed below the Permian sea, and then filled by magnesian 

 deposit. Glacial erosion was probably the cause of the removal of this 

 Permian dolomite from the general surface of the land. After observa- 

 tions from the President and Dr. Knight, Mr. Shaw, C.R., criticised the 

 assumption that gaping fissures could be formed in a synclinal trough 

 like that of the Cork limestone. In support, however, of the author's 

 view^s he referred to Permian beds at Dingle, which he had visited. ]Mr. 

 Porter dissented from the view that the dolomite was Permian; he 

 thought that the limestone had been dolomised in situ, possibly by the 

 actioii of humic acid, etc., in the neighbourhood of faults. ]\Ir. Bergin 

 also took part in the discussion. Mr. D. O'Mahony, F.C.vS., called at- 

 tention to the remarkable absence of magnesia in the limestone rock in 

 the neighbourhood, and in the water derived therefrom. 



At various meetings of the Club, Prof. M. M. HARTOGhasmentioned the 

 following rare or interesting finds in " Pond Life" — 



SCHIZOMYCETES : — Beggialoa roseopersicina, ZofF., in tanks at Queen's 

 College— Lankester's "Peach-coloured Bacterium," the Clathrocystis 

 form appearing as specks visible to the naked eye. 



SAV-SLOJ^^Qm-^^j^-.—Aphanomyces sp., Bennet's lough, two miles north- 

 east of Cork. 



Desmidiace^ -.—Didymoprium grevillei, Kiitz., Bennet's lough. 



Rhizopoda •.—Pelo??iyza pahistris, Greep, tanks at Queen's College. This 

 gigantic multinucleate amoeboid attains here a diameter of over one- 

 twelfth inch. 



(li-L,iA.'i:x: — Urocentrum turbo, Miill., Loxodcs ehrenbergii, tanks at Queen's 

 College. 



TuRBEivl^ARiA -.—Catenula lemna, Duges, Microstomum lincare, O. F. IMiill., 

 Mesostomum rosiratum, Ehrb., Planaria torva, Bennet's lough ; the first two 

 species show fission exquisitely. 



ROTIFERA -.—Floscularia longicaiidata, Huds., tanks at Queen's College ; 

 this rare species is only recorded from Scotland ; laphrocampa sp., lower 

 pond at Queen's College, this species has both a malleoramate mastax 

 and two distinct pink eyes, thus differing from either species described 

 by Hudson. 



Ol^iGOCH^TA I^IMICOLA •.—Chcctogaster crystallinns, a large species reveal- 

 ing its structure under a pocket-lens, in tanks at Queens College; 



