Vol. 62.] CAKBONTFEROtfS ROCKS AT RUSH. 295 



IV. Summary of Conclusions. [C. A. M.] 



The following is a summary of the most important points referred 

 to in this paper. 



(1) The Carboniferous rocks at Rush consist of about 2500 feet 

 of slates, conglomerates, and limestones, which range from the 

 Upper Zaphrentis -Zone to the Upper Dibunopliyllum-Zone (Cya- 

 thaxonia- subzone). 



(2) The Conglomerates belong to the Syringothyris-Zone, and 

 indicate that the Mid-Avonian elevation and disturbance recently 

 noted at Pendine aud Weston-super-Mare extended into Ireland. 



(3) There is a general upward succession of the beds from south 

 to north, and the rocks have all been subject to severe earth- 

 pressure acting from the south. Many of the beds are well cleaved, 

 and the limestones have been thrown into many acute folds and 

 are sometimes slightly overfolded. 



(4) Among the CyatJiaxoaia-Be&s local decalcification has caused 

 the complete disappearance of a considerable thickness of limestones. 



(5) The limestone of Curkeen Hill is of Upper Dibunophyllum-dige, 

 but probably of a lower horizon than the Cyathaxonia-Heds of Rush. 



In conclusion, I wish to express my very great indebtedness 

 to Dr. Vaughan for his ungrudging help in undertaking the 

 examination and description of the fossils from these beds, and for 

 contributing the following account of the correlation of the rocks 

 at Rush ; also to Dr. G. J. Hinde, Dr. Wheelton Hind, Dr. A. 

 H. Poord, Dr. F. A. Bather, and Mr. R. Kidston, E.R.S., for assist- 

 ance in determining certain of the fossils ; and finally to Mr. C. 

 Murray, B.A., of Dublin, for help in collecting the fossils. 



V. Paunal Lists. 1 [A. V.] 



The Slates (ZAmREiXTis-Beds). 



Rib. Zaphrentis cf. Phillipsi. Phillipsia sp. 



Productus sp. (cf. Pr. ruyatus). j 



Athyris sp. (cf. A. Boy am 



mut. (3). 

 Camaroia>chia sp. (?) 

 Loxonema sp. (fragment). 

 Fenestellid. 

 Fistuliporid. 



R 4 a. Zaphrentis cf. Phillipsi. 

 Productus cf. Martini (!) 

 Orthothetcs cf. crenistria (cf. 



mut. Z 2 ). 

 Spirifer cf". clathratus (?) 

 iSjDiriferid (cf. Syrinyothyris 



cf. laminosa). 



Near f Zaphrentis cf. Phillipsi. 

 R 4 a. \ Bellerophon sp. 2 



R5a. Zaphrentis cf. Phillipsi. 



1 In addition to the fossils mentioned in the following lists, fragments of 

 crinoids occur in some abundance throughout the sequence. 



2 Determined by Dr. Wheelton Hind, F.G.S. 



