42 Reports and Froceedinga — Geological Society of London. 



this Society chiefl}'- aimed at were (1) the preparation from ancient 

 Japanese records of a reliable Earthquake-Catalogue ; (2) the testing 

 of various instruments devised for seism ographical inquiries ; (3) the 

 careful observation, at as many points as possible, of the elements of 

 the earthquake-movements ; (4) the measurement of the amount of 

 elevation and depression of areas during earthquake-shocks. Already, 

 hy the labours of this Society, seismographs had been supplied to 

 many of the telegraphic stations in Japan, and valuable results had 

 been obtained. The Seismological Society of Japan was founded 

 before that of Switzerland. Geologists could become members of 

 the Seismological Society of Japan (which stands greatly in need of 

 help) by an annual payment of £1, which will entitle them to 

 receive the whole of the publications of the Society. Prof. Judd 

 was prepared to receive the names of members on behalf of Prof. 

 Milne. 



The following communications were read : — 



1. " The Zones of the Blackdown Beds and their Correlation with 

 those at Haldon, with a List of the Fossils." By the Eev. W. 

 Downes, B.A., F.G.S. 



The author, after some remarks on the inexact way in which fossils ' 

 had been collected from or referred to the Blackdown beds, and a 

 sketch of the literature of the subject, passed on to a correlation of 

 the Blackdown beds with deposits in other localities. He pointed 

 out that they do not contain a sufficient number of species in 

 common with the Marne de Bracquegnies to justify an identifi- 

 cation with this. He compared them with the Haldon beds, and 

 by a comparison of the 'fossils bed by bed, showed that of 196 

 Blackdown species (omitting a few corals), 50 occxir at Haldon ; the 

 latter section, however, represents not the whole, but only the upper 

 part of the former, nine beds in the lower part of it being without 

 representatives at Haldon. Here also the higher beds contain a thin 

 band distinguished by a distinct and all but unique fauna (the zone 

 containing the corals described hy Prof. Duncan). Comparing the 

 Blackdown beds with lists of Cretaceous fossils from other localities, 

 it would appear that we have neither exclusively Upper-Greensand 

 forms at the top, nor exclusively Lower-Greensand forms at the 

 bottom, nor exclusively Gault forms in the middle. 



2. " On some new or little-known Jurassic Crinoids." By P. 

 Herbert Carpenter, Esq., M.A. Communicated by Prof. P. Martin 

 Duncan, M.B. Lond., F.E.S., F.G.S. 



The author first described in detail a species from the Great 

 Oolite, principally of Lansdown, and hence known as the " Lans- 

 down Encrinite." It was described in 1828 by Dr. J. E. Gray as 

 Encrinites [Apiocrinites) Prattii, and subsequently by Goldfuss as 

 Apiocrinites ohconicus, and by D'Orbingy as Millericrinus ohconicvs, 

 whilst Bronn, in 1848, recorded it as Millericrimis Pratti. The 

 stem varies greatly in length and in the number of its joints : and 

 from the characters presented by the fossils, the author came to the 

 conclusion that the species was either pedunculate or free, and he 

 cited various examples of nearly allied pedunculate and free Crinoids. 



