108 



MR. GARDINER AND PROF. REYNOLDS ON THE 



[Hay 1909, 



in the far greater development of tuffs and coarse grits. The con- 

 glomerate, which is finely exposed, is identical in character with 

 that in the Tourmakeady stream. 



Fig. 1. (For description, see p. 107.) 



Green quartzose grit 



Fine grits & cherts 



! ,F .^ 



/ F 



:^^^=gdilBBj|g 



Fine grits & cherts 



W 



= ^ 3 ~' /f' ^|I=@ 



5o°n. io°e. fifii 



; Gritty ashes 



iSS; Gritty ^fflP 1 

 s^5 ashes "fj^M^"" 



^frgij- Coarse tuff 



f 



£- 





Waterfall ^ , j9= 

 ^\ 55°N.20 o wl|l| 





r 



;t? Gritty ashes 



x 







^>< 



^ 



s IP 



^ Fine grits & cherts 



|1%; — Coarse grit 



50°N.W. \ Ife^ Contorted fine grits 

 „ , , -i^fc & black slates 



Plan of %|i| 



part of TREANLAUR STREAM (c) j|gr---Graptoiitic slate 



to the N. E. of Mount Partry ^^^--^fomerate 



Scale: 3 inches = about 100 yards. ~^^0M- 



F= Fault. ^\\\ 



The graptolites found in Band 2 have been kindly identified by 

 Miss G. L. Elles, D.Sc, to whom we tender our most sincere 

 thanks ; they show that the rocks are of Upper Arenig age (about 

 the zone of Didymograptus hirundo). and include the following 

 species : — 



Didymograptus acutidens, Elles & 

 Wood (common). 



Didymograp)Vus bifidus, Hall (com- 

 mon). 



Didymograptus extensus, Hall (com- 

 mon). 



Didymograptus filiformis, Tullberg. 



Didymograptus gracilis, Tornquist 

 (common). 



Didymograptus hirundo, Salt. 



Tetragraptus bigsbyi, Hall (1 speci- 

 men). 



Tetragraptus pendens, Elles. 



Tetragraptus, sp. nov. (common). 



Diplograptus (Glyptograptus) denta- 

 tus (Brongn.). 



Clonograptus lapworthi, Rued. 



Dendrograptid. 



