20 MEETING OF CORNISH SCIENTIFIC SOCIETIES. 



demonstration, "The Little Hercules" bored a vertical hole, two 

 feet eleven inches deep, with bits varying from 2^ inches to 1^ 

 inches. The running time in this case was six minutes thirty 

 eight seconds, and the full time occupied, including stoppages, 

 nine and a half minutes. The performances of the little machine 

 were regarded by all present as being highly satisfactory, and 

 hearty congratulations were tendered to Mr. George J. Smith, 

 the principal of the foundry, and Mr. McCulloch who superin- 

 tended the demonstrations. 



After inspecting the air-compressor, the company adjourned 

 to East Pool account-house, where they were entertained at 

 a luncheon by Mr. G-. J. Smith ; after which the following papers 

 were read at Carn Brea account house. 



"Eecent discoveries of fossils at Nelly's Cove Porthallow," 

 and "Some modern ideas as to the formation of granite," by 

 Mr, F. J. Stephens. 



"The Convocations of the tinners of Cornwall," by Mr. H. 

 "W. Fisher. 



"Economy and speed in Air-Compressing and Rock- 

 Drilling," by Mr. W. Burgess. 



The reading of these papers concluded the business of the 

 meeting. 



