CONTENTS. 
Mr. S. Smirn’s Remarks on the Bursting of Guns and Cannon....... POR EOICOCL 
Hon. J. WEATHERED on Combined Steam ........scecssseseseccecececerees Raecneuncine 
Mr. C. F. Wurrworrn on Recent Improvements in Railway Signals.......... “45 
Mr. R. P. Witu1ams on an Instrument for setting out Curve Lines...........00 
APPENDIX. 
GroLoey. 
Mr. E. CuarLeswortuH on some remarkable Yorkshire Fossils, including the 
unique Plesiosawri in the Museum at York, with pictorial restorations by 
Mr. Waterhouse Hawkins.......... sevesats Seecsresaees vor GERCRCGBCER ERIC OREACR EAE ees 
Mr. W. Peneetty on an Ichthyolite found in the Devonian Slates of East 
BRERA IVMEGeain s <ceuniGeh so chasidatinssnesceeeractsecnssronssrneatdevercscunssoseceqa¥ecees esl 
— on the Trilobite found at the Knoll Hill, Newton Abbott... 
Professor Rogers on the discovery of Strata of supposed Permian age in the 
interior of North America, by Mr. Meek and other American Geologists ... 
Mr. J. Wouey’s observations on the Arrangement of Small Stones on certain 
bare Levels in Northern Localities ............ Peek eeade ct Recnccciscassasessneestrdss 
Botany. 
Mr. J. H. Davis on the Plants of the Oolitic Moorlands .........cseesescsoesesees : 
PEAS cs ceessininss: voces sees Avaus snceneneune Feu saklcstcaececunets eeabe naan srapeveuascas Mgccuviseea 
ERRATA. 
Page 85, line 21, for south, read north. 
Page 85, line 33, for contracted, read contorted. 
Page 90, line 30, for illustrated, read more fully given. 
Page 92, line 13, omit and. 
Page 92, line 14, for rudimentary, read sedimentary. 
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