354 Yorkshire N^atiiralists at Boices. 



Falls, then over the Rigg' and the moors to Bowes, the route 

 presenting such a variety of conditions that a naturalist might 

 find much of value, no matter in what particular study he was 

 interested. In Deepdale, near the falls, Mr. F. Hawkesworth 

 obtained a fine tooth of Petalodtis hastingsicc, over an inch 

 across, this was from a slab of limestone. In the river were 

 large quantities of St. Cuthbert's beads — broken sections of the 

 stems of encrinites, weathered from their softer matrix. 



The Rigg is a ridge of rock resembling an enormous roche 

 moutonnee, running east and west. On this a successful search 

 was made for stria?, two or three striated surfaces being found 

 on the topmost ridges. One of these was of particular interest, 

 as it exhibited a continual scratch, over 30 feet long, which was 

 deeper towards the east, and also had a series of semi-lunar 

 fractures, at right angles to the striae, each being larger than 

 the preceding', the last one being over a foot across. These 

 fractures had apparently been caused by a large boulder em- 

 bedded in the glacier, as it travelled due east over the Rigg. 

 The same ice-stream had carried the boulders of Shap granite, 

 a few of which were noted on the ramble. 



On Saturday evening a meeting, held at the Unicorn Hotel, 

 was presided over by Dr. R. Braithwaite. Mr. W. Denison 

 Roebuck referred to an effort that was being made to form 

 a natural history society in the district. Mr. J. J. Burton read 

 a paper ' On the Geology and Archaeology of the District,' in 

 which many interesting questions were raised. A discussion 

 followed in which several members took part. Dr. Braithwaite 

 then gave a brief address on 'The Study of Mosses,' paying 

 particular attention to nomenclature. He also urged as many 

 as possible to take up that interesting subject. Mr. M. B. 

 Slater exhibited and described some specimens of ' the Pride o'i 

 Teesdale ' [Potentilhi fruticosa) which he had gathered in Tees- 

 dale the previous day. 



The following day the members had a pleasant ramble up 

 Sleightholme beck to the ' Trough ' (where are some curious 

 pot-holes), over the moors and back to Bowes. In the evening" 

 the plants collected during the two previous days were examined 

 and compared. 



On Monday the party divided : some walked to Kilmonds 

 Scar and Rutherford Bridge, others took a conveyance. The 

 bryologists, who were particularly well represented, were rein- 

 forced and accomplished much good work. The woods and 

 fields also yielded a rich harvest to the mycologists. 



Naturalist^ 



