THE VICTORIAN NATURALIST. 



The Chairman congratulated the author on the paper, and was 

 pleased that Mr. Hardy was working the group systematically. 

 More knowledge of these plants was badly wanted, many of 

 which were of great economic importance. 



4. By Mr. E. O. Thiele, entitled " A Trip to Lake Karng and 

 Mt. Wellington, North Gippsland." 



The author gave an account of a recent trip, in company with 

 three others, to a small mountain lake in North Gippsland. The 

 lake possesses certain features which place it in a position apart 

 from other Victorian lakes. Its cause is a huge barrier of tumbled 

 rocks in a very deep, narrow, and precipitous mountain valley, 

 which effectually dams back the stream flowing down the valley, 

 and thus forms the lake. Landslip and glacial agencies have 

 been respectively suggested to account for the origin of this 

 remarkable dam. The merits of these explanations were dis- 

 cussed, and the observations made by the author caused him to 

 favour the landslip origin. Soundings of the lake gave a depth 

 of 150 feet near the centre. The paper was illustrated by about 

 30 lantern slides, and a number of botanical specimens from the 

 top of the mountain were exhibited. 



Mr. T. S. Hall, M.A., said that Mr. Thiele had apparently 

 settled the question of the origin of Lake Karng. It was not a 

 glacial tarn, but a landslip-dammed valley. He had also made 

 an important addition to our knowledge by extending the area 

 over which we knew Upper Ordovician rocks occurred. During 

 the past two or three years our knowledge of the rocks in the 

 district just west of Mount Wellington had been greatly 

 modified, and the comparatively recent geological map was quite 

 unreliable. 



Mr. A. E. Kitson, F.G.S., complimented Mr. Thiele on the 

 importance of the observations made by him, and said that on 

 the evidence brought forward he was satisfied of the landslip 

 origin of the dam at Lake Karng. From the description given of 

 the porphyries forming the main mass of Mt. Wellington, and 

 their associated sediments, he was inclined to think that the 

 former belong to the Snowy River series (Lower Devonian), and, 

 if so, would be unconformable to the Upper Devonian or 

 Carboniferous sediments, instead of being intrusive into them, as 

 was suggested by Mr. Thiele. He said that to the north-west of 

 Mt. Wellington, in the basin of the Upper King River, he had 

 recorded a series of similar sediments, over 2,000 feet thick, 

 which undoubtedly rest unconformably on porphyries similar 

 to those referred to, and quite different from those interstratified 

 with the sediments. 



EXHIBITS. 



By Miss K. Cowle. — Plant, Eucryphia billardieri, and shells, 

 from Stanley, Tasmania. 



