240 



YORKSHIRE NATURALISTS AT ROBIN HOOD's BAY. 



Ferns. 



Lastrea filix-mas. 

 Lastrea dilatata. 

 Polystichum aculeatum. 



Scolopendrium vulgare. 

 Athyrium filix-foemina. 

 Equisetum maximum. 



Mosses. 



Trichostomum tophaceum Brid. 

 Barbula muralis L. 

 Barbula unguiculata Dil. 

 Ulota bruchii Hornsch. 

 Orthotrichum affine Schrad. 

 Bryum capillare L. 

 Bryum pallens. 

 Weisia viridula Brid. 

 Thuidium tamariscinum Hedw. 

 Brachythecium rutabulum L. 

 Eurhynchium striatum Schreb. 

 Eurhynchium prielongum Dill. 



Rhynchostegium confertum Dicks. 

 Amblystegium serpens L. 

 Hypnum filicinum L. 

 Hypnum commutatum Hedw. 

 Hypnum molluscum Hedw. 

 Hypnum cuspidatum L. 

 Hypnum purum L. 

 Hypnum resupinatum Wils. 

 Hypnum stellatum Schreb. 

 Hylocomium triquetrum L. 

 Hylocomium loreum L. 



Hepatic.^;. 



Fegatella conica (L. ). 

 Frullania dilatata (L.). 

 Radula complanata (L,). 

 Lophocolea bidentata (L. ). 



Jungermania riparia Tayl. 

 Jungermania turbinata Rad. 

 Aneura sinuata Dicks. 



Pellia epiphylla (L.). 



Kantia trichomanis (L.). 



The sections of Conchology, Entomology, and Micro-Zoology and 

 Micro-Botany were not represented. 



For the Geological section, the President of the Union delivered 

 a most instructive address, drawing attention to the development of 

 the strata in the district visited, and successively describing the Sand- 

 stone or Moor Grit capping the cliffs, the Scarborough or Grey 

 Limestone series, the Middle shales and sandstones, the Millepore 

 bed, the Lower Estuarine shales and sandstones, the Dogger (with 

 its divisions — the true Dogger, including the Nerinaea bed, the Yellow 

 sandrock and the Grey sandrock), the ' striatulus ' or passage beds, 

 and the alum or ' communis ' shales of the Upper Lias. He also 

 drew attention to the stratigraphy of the coast between the mouth of 

 the Tees and the Humber, where, passing southwards, we come upon 

 newer strata, with a slight dip to the south-east, except where faults 

 break the continuity, of which that at the Peak is the most remarkable. 



Mr. Adamson, F.G.S., the senior secretary of the section, also 

 thus reports upon the work actually accomplished during the day. 

 Upon arrival at the Peak Station Mr. Hudleston would, considering the 

 storm then beating, have advised the total relinquishing of the pro- 

 gramme, but at the urgent entreaties of several members he consented 

 to lead the way down the line and visit the Crag Hall Quarry, of 

 course, further willing, if possible, to carry out the full day's work. 

 Accordingly the path was taken along the line to show the effects of 



Naturalist, 



