iv TABLE OF CONTENTS. 
Page 
CHAMPERNOWNE, A,, Esq., and W. A. E. UssHer, Esq. Notes on 
the Structure of the Paleozoic Districts of West Somerset .... 5382 
Davins, T., Esq. On the Microscopical Structure of some Arvonian 
Rocks from Pembrokeshire ...... sisal Ive a lotale.s iicinicicial ot ieee one 
Davis, J. W., Esq. Notes on Pleurodon affinis, sp. ined., Agassiz, 
and Description of three Spines of Cestracionts from the Lower 
@oal-measuress,, (Plate x6) secre tare sista ieee ae Low 
Dawes, Prof. W. Boyp, M.A. On the Range of the Mammoth 
Til (SOLVE) OUNCE AUT cacoceovacerotocogbcocae Ancsnarnicacna JIS) 
, and Rev. J.M.Mxrxtto. Further Discoveries in the Cresswell 
(OPW Esa Wana temcc oo cc saat p le av ota\snn: ecatarnuehs, ateatenaiotalene Ruane tere 724 
Dawson, G. M., Esq., D.Sc. On a new Species of Loftusia from 
British Columbia (late mvile)\eer ae reese Soho No dahon es 
Dawson, J. W., Esq., LL.D. On the Microscopic Structure of 
Stromatoporide, and on Paleozoic Fossils mineralized with 
Silicates, in illustration of Hozoon. (Plates HI-YV.) ..... wey as 
Dovts, P., Esq. On some Tin-deposits of the Malayan Peninsula.. 229 
Duncay, Prof. P. M., M.B. On the Upper-Greensand Coral Fauna 
of Haldon, Devonshire. (Plate VIIL) ...........0.. geonce. St 
Ernerriver, R., Esq. Notes on the Mollusca collected by C. B. 
Brown, Esq., from the Tertiary Deposits of the Solimées and 
Javary Rivers, Brazil. (Plate VII.) ........ Godoti Seonondn Sy 
Erueripves, R., Esq., Jurf. On the Occurrence of the Genus 
Dithyrocaris in the Lower Carboniferous or Calciferous Sand- 
stone Series of Scotland, and on that of a second Species of 
Anthrapalemon in these Beds. (Plate XXIII.) ............ 464 
FisHer, Rey. O. Ona Mammaliferous Deposit at Barrington, near 
Cambridge sti scgeanie em cet emer Ares Ya na sae 670 
GarDNER, J. 8., Esq. Description and Correlation of the Bourne- 
mouth Beds.—Part I. Upper Marine Series ........ ia SPS 209 
Hawxsuaw, J. C., Esq., M.A. Notes on the Consolidated Beach 
Ahp lets aae wn) | Gh aoagocnoognsas200 00 CaO NA eothaas «. 239 
Hrexs, H., Esq., M.D. On anew Group of the Pre-Cambrian Rocks 
(the Aryonian) in Pembrokeshire. With an Appendix by T. 
Davies, Hag... i sichic se aenctopinleeesenrahsne tea stolons vere .. 285 
On the Pre-Cambrian (Dimetian, Arvyonian, and Pebidian) 
Rocks in Caernarvonshire and Anglesey. With an Appendix by 
Prot. 1. G..BoNNEY, MUAT, HORS ech ene) eee 295 
Hinper, G. J., Esq. On Conodonts from the Chazy and Cincinnati 
Group of the Cambro-Silurian, and from the Hamilton and 
Genesee-Shale Divisions of the Devonian, in Canada and the 
United States. . (Plates XV.-XVIT-) 41,5 0) HO ae Sb 
