170 Rev. Canon Crevjdson — Coniston Grits of Windermere.' 



The newly exposed beds occur at an horizon some distance above 

 the Latrigg band, but a good way below the overlying Bannisdale 

 Slates. They appear to correspond in character Avith the band noted 

 by Professor Hughes as occurring in the grits at Winder and Crook, 

 about three-quarters of a mile north of Sedbergh 1 ; but the matrix 

 in which the Windermere fossils are embedded is much finer than the 

 Winder rock, a condition which is frequently observed in comparing 

 the correlatives of the two localities. It is possible that the Calgarth 

 Beds are actually the equivalents of the Winder Grits ; but as 

 Professor Hughes states that the latter are within 1,200 feet of the 

 base of the Coniston Grits of the Sedbergh district, and as the basal 

 grits of that district are equivalents of the Upper Coniston Flags 

 (Upper Coldwell Beds of Lakeland), the Calgarth seam may be at 

 a higher horizon than that of Sedbergh. In any case the bands 

 belong to the same general series, for the Winder Grit is in the coarser 

 grits of Sedbergh, which represent the Coniston Grits of Windermere, 

 and not in the lower flaggy grits which are equivalent to the Upper 

 Coldwell Beds. 



The fossils have generally weathered in bands which closely 

 resemble those which are so frequently observed in the Kirkby MoOr 

 flags, the fossils being very crowded, but all the carbonate of lime of 

 the shells has been removed. Better preserved fossils are sometimes 

 abundant in the unweathered portions, but it is very rarely that the 

 stone breaks so as to give a good exposure. 



There is another quarry a few yards from that in which the fossils 

 were found, but I was unable to find in it any trace of organic 

 remains ; it is, however, quite possible that some may yet be 

 discovered, as my examination was unavoidably very cursory. 



Dr. Marr, to whom I showed the specimens I procured, has very 

 kindly had them named by Miss Elles, Sc.D., according to the 

 appended list. He has sent me the following paragraph from a work 

 on the Geology of the Lake District which he is at present writing : 

 " Prof. Hughes has described under the name of Crook and Winder 

 Grit a coarse band of calcareous grit which is found among the 

 Coniston Grits of the hills near Sedbergh. This grit may be also 

 represented in the Lake District, and should be looked for. 

 A specimen of yellow grit collected by Ruthven, and preserved in 

 the Kendal Museum, is labelled ' Applethwaite '. It contains 

 Monograpti, Crinoids, and Brachiopods, and may be a representative 

 of the Winder Grit." 



I think that the grit which I have described may be the deposit 

 for which Dr. Marr has requested that search should be made, 

 though, as stated above, it is not necessarily on the horizon of the 

 Winder Grits, nor, so far as has been hitherto ascertained, does it 

 contain any traces of Graptolites, like the specimen in the Kendal 

 Museum. 



I am greatly indebted to Dr. Marr for his help in preparing this 

 paper, and also to Miss Elles for naming the fossils. 



1 See Memoirs of Geological Survey, Explanation of Quarter Sheet 98 

 N.E., pp. 14-6. 



