Reports and Proceedings. 523 



during the present year in the Geological Magazine/ whilst many- 

 are referable to species which have been previously described by 

 various authors in different publications. 



The following seventeen species are, however, altogether new, 

 having never before been described in any work, viz. : — Heliophyllum 

 prolificum, Syringopora intermedia, Productella Eriensis, Zeiorhjnchus 

 Euronensis, Fenestella magnifica, F. marginalis, F-fiiliformis, Platyceras 

 uniseriale, and two other species of Platyceras, too fragmentary to 

 be definitely determined, Strophosttjlus (?) siib-glohosus, S. (?) ovatus, 

 S. oUiquus, Holopea Eriensis, Helicotoma serotina, Spirorhis Arhonensis, 

 and Ortonia intermedia. 



The work is abundantly illustrated with woodcuts, and there are 

 eight plates besides, in which are figured the more important 

 specimens and some of the new species. 



All the illustrations are well executed, and would have shown much 

 better had they not, through some mistake of the printer, been 

 printed on an inferior quality of paper. With the exception of two 

 of the woodcuts, all the figures are original. 



By the publication of this report. Dr. Nicholson, who has already 

 contributed so much to our knowledge of Canadian palseontology, 

 has laid us under a yet further obligation ; the book will doubtless 

 be highly acceptable to all who are interested in American geology. 



Geologists' Association, London. 



Henry Woodward, Esq., F.E.S., President. 



ExcuBSiON TO Cheltenham. 



THE London Geologists' Association made their Midsummer ex- 

 cursion to Cheltenham ; and, at the suggestion of the President 

 and Secretary, Dr. Wright, F.E.S., was requested to draw up a pro- 

 gramme for five days and undertake the direction of some of the 

 excursions. 



On the arrival of the party on Monday, the 20th July, they were 

 conducted to the School, near the Station, and partook of a sub- 

 stantial lunch, — time not permitting them to go into the town, — and 

 at three o'clock they again took the train for Churchdown. Dr. 

 Wright's object was to give the members a physiographic picture of 

 the Severn valley. He first guided them to the summit, and ex- 

 plained the western side of the panorama from the Abberley Hills in 

 the north, along the Malvern chain in the west, and the May-hill 

 and Dean Forest on the south-western horizon ; he pointed out the 

 structure of these hills, which give a key to a right understanding 

 of the varied features of the surrounding country. The valley next 

 engaged the attention of the Director; he pointed out the area 

 occupied by the Keuper beds and the Lias, and indicated the limits 

 of this formation high up in the escarpment. He then showed that 

 Eobin's-wood Hill, Churchdown Hill, and Bredon Hill, were three 

 ^ See Geological Magazine, January — April, 1874, 



