CiRC. No. 72i 

 At Keld-head, near the Redmire station, Lead is mined, and the 

 Keld-head Limestone contains very fine and large specimens of 

 Productus and other fossils. Between this Limestone and the Main 

 Limestone of the Shawl there are three beds with intermediate Shales 

 and Grits, together with six inches of Coal, the whole occupying about 

 480 feet in thickness, whilst beneath there is a similar series of 430 

 feet ; the lowest Limestone occupying the bottom of the valley is of 

 unknown thickness. The total thickness of the series, including the 

 strata above the Main Limestone, is nearly 1000 feet. 



Botany. 



Mr. John Percival, B.A., communicates the following : — 



Perhaps the best course to adopt in the investigation of the flora 

 of this district will be for one contingent to take the lower part of the 

 valley and another the higher part along the Scars. The former route, 

 though less interesting from a picturesque point of view, will well repay 

 a visit, especially the woods near the river below Redmire and about 

 Bolton Hall. Both sections could then join each other on the hill above 

 Wensley station, for combined work on the Shawl and woods here. 



On the castle at Bolton may be observed Parietaria diffusa, and in 

 the fields near the church Berberis vulgaris occurs. After leaving the 

 village, Bolton Gill, which extends for about a mile up the hill, is soon 

 reached and yields many interesting species. On nearly all the Scars 

 all along the route may be obtained Huichinsia petn^a, Asplenium 

 trichomanes, A. ruta-muraria, A. viride (sparingly) with Viola lutea 

 on the moorland above. Saxifraga granulata and Hippocrepis comosa 

 grow about Scarth Nick and Preston ; below the latter place Asplenium 

 adiantum-nigrum may be found among grit tumble. 



In the Shawl woods will be collected — Euonyvius europcsus, Geum 

 inter/nediuin, Myosotis sylvatica, M. collina, Melampyruni pratense var. 

 montafiui/i, Lathrcea squamaria (on the Ash), Gagea lutea, &c. It 

 will be rather early for Orobanche rubra, and it is now fast disappearing 

 altogether. Hellebonis viridis may be seen in its later stages in the 

 woods near Leyburn. The ground about the Flag Quarries just above 

 the Shawl is interesting and yields Teesdalia nudicaulis, Arenaria 

 verna and Sagi?ia ciliata. Several Aliens occur in the planted wood 

 near here. The whole district is fairly rich in cryptogamic forms. 



Entomology. 



Very scant attention appears to have been paid to the Entomological 

 Fauna of this district, and Porritt's ' List of Yorkshire Lepidoptera' 

 has its references from this district few and very far between. 



Conchology. 



Mr. W. Denison Roebuck, F.L.S., furnishes the following notes: — 



The district to be traveVsed on this occasion is one of conchological 



interest, and the prevalence of limestone in its soil is evidenced by 



the presence of several usually uncommon species. A piece of waste 



land situate at the point where the railway crosses the Apedale Beck 



