XV1 PROCEEDINGS, JULY. 
be sati:factorily explained by the ordinary process of subaerial 
weathering and denudation. We found no fossils im s¢tu in the sand- 
stone of this region, but on the beach about the boathouse pieces of 
silicified wood are not uncommon. Colonel Legge gives a very clear and 
accurate description of this region, and his paper was of much assistance. 
NOTES ON THE GEOLOGY OF LAKE ST. CLAIR AND ITS NEIGHBOURHOOD... 
Mr. R. M. Jounston, F.L.S., read an elaborate paper under this 
title ‘‘together with a brief review of the probable origin of our 
numerous lakes and tarns.” He dealt especially with the previous 
paper, and said it would have been better if Mr. Officer had given new 
work rather than what had already been better contributed 33 years. 
previously by Mr. Gould, Apart from the unrivalled beauty of the 
scenery, there was nothing peculiar in the geological features of Lake 
St. Clair and its immediate neighbourhood which was not common to, 
and far more perfectly represented by, nearly all the elevated greenstone. 
mountains and plateaux, forming the most familiar physiographic 
features of the greater part of Tasmanian landscape. From long 
observations he had arrived at the conclusion that our larger lakes om 
the higher levels of greenstone plateaux, such as Lakes St. Clair, Sorell, 
Echo, Arthur, and the Great Lake, together with innumerable lakelets 
and lagoons, had been mainly determined by the original irregularities 
of surface, produced yartly by the anastomoses of successive flows of 
greenstones during their eruption, and partly by the unequal contrac- 
tion due to the lack of homogenity of the cooling surfaces of the more 
massive horizontai flows of greenstone magnia so characteristic on the 
mountain plateaux of Tasmania, and which cover continuously, or in 
an anastomosing network of ranges, so large a portion of the superficial 
area of eastern Tasmania. This conclusion had again and again been 
forced upon his mind by the closer study of our upland lake systems, 
as it seemed to account satisfactorily for all the known facts, and, 
moreover, it was in harmony with the views of leading physicists when 
contemplating the causes which produced the initial and universal irre- 
gularities of surface on our globe, and which in their turn determined 
the limits of land and sea, 
NOTES ON SOME NEW AND RARE FISH. ~ 
Mr. A. Morton deseribed a new fish, found at Bruny Island. Dr. 
Ramsay, Curator of the Australian Museum, considered the Bruny 
Island specimen very similar to Centrina salviani. Mr. Ogilvy, however, 
after a special examination, came to the conclusion that the Tasmanian 
specimen might fairly be differentiated from the Mediterranean and 
Eastern Atlantic C. salviant. Mr. Morton, therefore, proposed to call the 
local specimen C. bruniensis. 
Mr. Morton also drew attention to six rare fish that had been re- 
cently caught off Tasman Island, in 70 fathoms, by some fishermen, 
while fishing for trumpeter. On examination they proved to be 
Euremetopos johnstonii, the type specimen he (Mr. Morton) had 
described in 1887. 
MISCELLANEOUS. 
The SECRETARY laid on the table the fourth volume of the ‘‘ Journal 
of the Australasian Association for the Advancement of Science,” and 
said that as editor of the journal he considered it his duty to ask for 
the thanks of the Society to Messrs. Strutt, Grahame, and Hogg, of the 
Government Printing Office, and the department generally, for the 
