1848.] DAVIS ON THE SOUFFRIERE OF ST. VINCENT. 53 



feet. 



Stratified and unctuous clay 10 



Yellow micaceous sandstone 8 



Grey laminated shale 16 



Yellow and red micaceous sandstone 7 



Ferruginous new red sandstone 9 



White micaceous clay 4 



Shale 12 



First seam of coal 5 



Micaceous sandstone 3 



Micaceous shale 4 



Second seam of coal, thickness unknown. 



The iron-clay formation between Port Grey and Shark's Bay passes 

 gradually into sandy grits, near Jurieu Bay, and then near the Moore 

 River into a level clay country, covered with white and yellow sand, 

 and but little elevated above the sea. The country rises again through 

 a series of undulations ; the higher hills being composed of iron-clay 

 and granitel covered with different varieties of the Eucalyptus. About 

 forty miles northwards from Perth a granitoidal table-land commences, 

 which has received the name of the Darling Range, and runs at an 

 elevation of 500 to 600 feet from thence to King George's Sound on 

 the south coast. 



In the district between the small rivers called the Canning and the 

 Serpentine, veins of zinc ore containing traces of lead and copper are 

 found and worked. These metalliferous veins run nearly from east 

 to west and dip to the north, but as the flat diluvial land between the 

 Darling Range and the sea-coast interrupts the granitel very abruptly, 

 they will probably have a very short run, or lie very deep. 



5. Notes on the Souffriere o/St. Vincent. By Major Henry 

 Davis, 52nd Light Infantry. 



[Communicated by Sir Charles Lyell, V.P.G.S.] 



In 1840, when quartered with the 52nd Regiment m the Island of 

 St. Vincent, I visited the Souffriere volcano, and again repeated my 

 visit the following year in company with a scientific friend, the Rev. 

 T. Checkley, now rector of Kingston the capital of that island : we 

 were fortunate enough to fall in with an engineer named Dixon, a 

 most sensible, hard-working Scotchman, who had a property at the foot 

 of the mountain, and was a resident in the island and eye-witness of 

 the eruption in 1812: this gentleman accompanied our party and af- 

 forded us most valuable information as a guide, and witness of the 

 events that left the traces of interest it was our object to visit. This 

 gentleman I regret has died since that time, and the more especially so, 

 as amongst the old people who saw the eruption so much ignorance 

 prevailed, and so much terror, that little or no reliance can be 

 placed on their report ; and now the lapse of six-and -thirty years 

 presents such a distorting medium, that everything they saw assumes 

 dimensions beyond the boundary of truth. However, the traces of the 



