Proceedings of the Royal Society of Victoria. 151 



(o) "Additions to the Fish Fauna of Victoria," by 

 A. H. S. Lucas, M.A., B.Sc. 



(6) " On the Occurrence of Krausia lamarckiana at 



Williamstown," by A. H. S. Lucas, M.A., B.Sc. 



(7) "The Old Red Sandstone Rocks and Fossils of the 



Mansfield District," by Mr. George Sweet. 



Mr. Stirling hoped that Mr. Sweet would carry on his 

 researches to the eastward. To the south of the area 

 described by Mr. Sweet, there was an outcrop of bluish or 

 greyish lava, which was probably Upper Silurian. 



Mr. G. S. Griffiths said that, up to the present time, the 

 Devonian Rocks which occupied the region about sixty 

 miles southward of the locality of Mr. Sweet's discoveries, 

 and also the region eastward, . were considered to belong 

 to the Upper Devonian, but no fossils with the exception of 

 a few vegetable remains had been discovered there. 



Mr. Sweet said he had not examined the rocks to the 

 eastward, except some fifteen miles in that direction. The 

 same plants that were found in the Iguana Creek beds were 

 also found on the top of Hat Hill. The rocks he examined 

 were in an almost continuous line with the coal beds in 

 Gippsland. If Carboniferous rocks were to be found outside 

 of the GippsJand District, the two localities mentioned in 

 his paper would be the proper places to look for them. 



Mr. Griffiths said that the locality examined by 

 Mr. Sweet was considered by Mr. Howitt as having at one 

 time been part of an old sea loch. Nearer to the sea were 

 to be found the remains of ancient volcanoes of vast 

 dimensions. When those volcanoes were in their prime, the 

 country stood at a greater elevation than now. It then 

 sank, until the sea overspread portions of it. The volcanoes 

 then sank and died out, and the mountain glens were 

 transformed into sea lochs. The conglomerates filled up 

 these lochs. There was then a re-elevation of the land, and 

 tremendous denudation, and another period of subsidence. 

 On the top of the conglomerates, beds of marl and limestone 

 were formed, and it was those beds that had been examined 

 by Mr. Sweet. 



Mr. Lucas said that since the discovery of the Muddy 

 Creek beds, no series of fossils such as had been brought to 

 light by Mr. Sweet, had been obtained in the colony. It 

 would be desirable to know if, in Tasmania, fossil fish had 



