76 Proceedings of the Royal Society of Victoria. 



were found here. A similar deposit, may have existed in the 

 other earlier rise between the ejectamenta and the black clays, 

 being concealed behind the timber. 



The beds in this 295ft. level were somewhat undulating, but 

 not so disturbed as in the upper level. 



At the end of this level, after passing out of the volcanic 

 material, a rise revealed tl>e presence of a similar material, 

 with the line of contact dipping northerly, as if to a second 

 hollow. 



From the bottom level a small gutter was found and worked 

 till it stopped abruptly against the volcanic ejectamenta, close 

 to the boundary of the same material in the bottom level and 

 at a height of 55ft. above it. I did not see this, as work was 

 immediately stopped and the ventilating pipes withdrawn, the 

 mine being closed in a few days. The volcanic ejectamenta 

 then occupy a hollow in the bed rock 390ft. in one direction. 

 They are overlain by mixed volcanic and sedimentary material, 

 the volcanic materials becoming very much less in upper levels 

 and the ejected blocks ceasing altogether. The whole range in 

 height proved is from less than 200ft. below the surface to 

 below 320ft., i.e., over 130 feet. 



The second deposit of volcanic ejectamenta at the end of 

 the intermediate level seems to be the .same as met with in 

 the old No. 8 workings, and described by Mr. Murray. The 

 two may be connected with one another, though separated as 

 seen in the drive. 



Mr. Murray suggests that the deposit at the No. 8 is a 

 volcanic outlet pipe. In that case a dyke of basalt was also 

 found. 



Such an explanation would account for the abrupt termina- 

 tion of the wash against the side of the volcanic materials in 

 this mine. There is no evidence, however, of great heat in 

 this case, and the materials resemble an ordinary subaerial 

 accumulation of volcanic ejectamenta. The large size of the 

 blocks would indicate proximity to the vent, and the actual 

 vent may be in the inmiediate vicinity, though not exposed in 

 the workings. The presence of ejected blocks in little dis 

 turbed beds above would require subsequent activity of another 

 vent. 



