430 Reports and Proceedings — Geological Society of London. 



After referring to the discovery of volcanic rocks in tlie upper 

 part of the Carboniferous Limestone Series at Tissington, the 

 authors proceed to describe evidence of volcanic action of the same 

 age on the western slopes of Congleton Edge. This ridge is capped 

 by two beds of Millstone Grit separated by black shales. Below 

 the lower grit (the ' Third Grit ') is a narrow dome of limestone 

 lying in the midst of so-called ' Yoredale Shales ' and exposed in an 

 •old quarry. The upper beds of the Limestone consist of thin shales 

 and limestones containing one important and some minor seams of 

 tuff and agglomerate, and certain evidence points to the probability 

 that a ' neck ' occurs in the quarry. A brook-section north of the 

 quarry exposes beds of ash and tuff interstratified with shales and 

 limestones, the thicker beds being presumably equivalent to those 

 seen in the quarry. A brook-section south of the quarry displays 

 the beds between the Limestone and the ' Third Grit,' and a small 

 quarry yields a varied marine fauna. 



In the Appendix it is stated that the igneous rock of the quarry 

 is either a volcanic agglomei'ate filling a vent, or a thick deposit of 

 very hard, coarse ash, probably formed not far from a vent. Ashy 

 material in the Limestone indicates that the volcanic action was 

 contemporaneous with the deposition of the Limestone. Two kinds 

 of lapilli occur — one palagonitic, without crystals, and a second 

 doleritic, free from vesicles, and containing felspar, olivine, and 

 often augite ; the latter type, though common in the agglomerate, 

 is rarer in the bedded tuffs. The fragments are frequently altered 

 into calcite. 



2. " On some Ironstone Fossil Nodules of the Lias." By E. A. 

 Walford, Esq., F.G.S. 



In the Lias of Oxfordshire some ironstone-nodules are found at 

 the point of contact of the Middle and Upper Lias. " The Middle 

 Lias stone is compact, crystalline, and absorbent, and contains 

 numerous irregular pyriform bodies," some of which " are changed 

 wholly into a form of red haematite. These .... bodies have 

 a circular vertical canal or shaft .... with the polyp and 

 zooid-cells ranged round in obscure spiral growth. The cells have 

 the areolated structure of the crinoids, or are spiculate of the type 

 figured by Sars in Pennatula. Though in form approaching the 

 Ciimacea, the presence of perforated brachial plates, of annulated 

 segments, and of spiculate zooidal cells, places the group between 

 the PennatulcB and the Crinoids. The resistance of the denser 

 structure of the beds of calcareous stems of the rag-beds has caused 

 the beds above and below them to become the lines of drainage, and 

 hence [to become converted] into beds of greater ferruginous 

 concentration." 



3. "Additional Notes on the GlaoiaL Phenomena of Spitsbergen." 

 By E. J. Garwood, Esq., M.A., F.G.S. 



This paper contains the results of additional observations on the 

 ice of Spitsbergen made by the writer in 1897. The inland ice 

 visited occupies two distinct areas, separated by Dickson's Bay and 



