CiRC. 139 



MR. HORNE'S COLLECTIONS.— Mr. Wm. Ilorne, F.G.S., will be 

 glad to show his Yoredale fossils and his collection of other antiques to the 

 members of the Union when opportunity offers. 



BOOKS AND MAPS.— The whole district is included in Sheet 51 (formerly 

 97, S.E.) of the One-inch Ordnance Map ; which may be had geologically coloured. 

 There appear to be no books or papers dealing with this particular portion of 

 Wensleydale, all the records appearing in the various books, such as Baker's 

 'North Yorkshire,' Barker's 'Three Days of Wensleydale,' Whitaker's ' Rich- 

 mondshire,' etc., being for other portions of the dale. These works may however 

 be referred to for general and topographical information, as also may Speight's 

 admirable recent work on 'Romantic Richmondshire.' 



PERMISSION has been granted by Lord Masham and Lord Bolton for 

 members to visit their estates. 



THE DISTRICT to be investigated — with Jervaulx Abbey as a centre, 

 includes the lower portion of Wensleydale, from Leyburn to Masham, an area which 

 seems never to have been systematically worked in any department of natural 

 history. The lists and notes which have been published in respect of the Wensley- 

 dale Flora and Fauna have either been for the upper portions of the dale, to which 

 attention has been paid by Fothergill, Baker, Percival, and Lees, or for the 

 neighbourhood of Masham lower down, which has been well worked ])y Mr. James 

 Carter and his sons. The Jervaulx tract therefore seems a perfect blank in our 

 knowledge of the distribution of Yorkshire plants and animals, and one likely to 

 amply repay investigation. 



ROUTES. — All parties will drive from Leyburn to Jervaulx, the conveyances 

 starting from the station immediately on arrival of the 11-36 a.m. train. 



I. — The general body of naturalists, led by Mr. Hartshorn and others, will 

 explore the neighbourhood of Jervaulx Abbey, the conveyances returning to 

 Leyburn at 4 p.m. 



II. — The geologists, led by Mr. W. Home, F.G.S. , will accompany the first 

 party to Jervaulx, but will leave at 3 o'clock for Harmby Quarries. 



ADMISSION TO JERVAULX ABBEY GROUNDS.— Arrangements 



have been made for free admission to members showing their cards. Without 

 cards the ordinary admission fee of 6d. will be charged. 



CONVEYANCES. — The charge for the drive from Leyburn to Jervaulx and 

 back will be 2/3 for those ■who order from Mr. J. Hartshorn, Leyburn, R.S.O. , 

 on or before Thursday morning's post, 7th of July. There will be no guarantee of 

 conveyances if not so ordered, and the charge, if there are any seats available, will 

 be 3/-. 



GEOLOGY.— Mr. William Home, F.G.S., of Leyburn, writes that the 

 district to be visited is the lowest part of the Yoredale Rocks seen in Wensleydale. 

 They dip down very quickly for the last seven miles at the rate of 100 feet per mile, 

 and the Upper and Main Limestone on the west end of Penhill to East Witton drop 

 down 700 feet and are covered with glacial drift and moraines, while the higher 

 ground is capped with Millstone Grit, but at Harmby we have a fine section of Red 

 Bead Limestone overlaid with Leyburn Black Flagstone. This Black Flagstone is 

 not found anywhere besides this immediate district. The Harmby quarries have 

 yielded a large number of fossil fish remains, of which he has collected some 35 differ- 

 ent species when the quarries were worked some years ago. These fishes lived in the 

 old carboniferous seas, and are principally of the shark family (for further details 

 of the fossil fishes see the Quarterly Journal of the Geological Society for November, 

 1884). The Black Flag is not rich in fossils but it has yielded the lowest and oldest 

 tibia yet found. Near Leyburn the flinty Chert is being worked and here mem- 

 bers will have the opportunity of studying these interesting minerals. Here we 



