46 DISCOVERY OF TWO CRATER LAKES. 



The mountain must; formerly have been many thousands of feet 

 high. It was from here, I beheve, that about 200 square miles 

 of Ban Ban and Degilbo runs were covered many feet deep with 

 lava, and in various places deposits of volcanic ash many feet 

 deep and miles distant from the sourcti of the eruption. I pur- 

 pose later on, and in the cooler weather, exploring the locality 

 more thoroughly, and will attempt to ascertain the depths of the 

 lakes in their centres. I have asked and obtained the permission 

 of the Hon. A. H. Barlow, Secretary for Public Lands, to name 

 the lakes the Coalstoun Lakes and this mountain Le Brun, and 

 these names will be recorded on official maps. Anoiher item of 

 interest on Ban Ban run may be mentioned, namely, an artesian 

 sprmg which forces its water in considerable quantity (probably 

 two or three million gallons daily) above its surroundings, and 

 with it a quantity of white gravel and sand. This spring is not 

 connected with the mountain lakes, as it flows from a tliiferent 

 direction, but is, I believe, from an ancient bed of a stream — 

 probably Baramba Creek — v/hich has been covered over with 

 lava, because the present Baramba Creek has the appearance of 

 having been pushed out, and its present course foUo.vs in most 

 cases the edge of the lava." 



AN UNPUBLISHED LECTUEE BY DR. LUDWIG 

 LEICHHARDT. 



[COMMUNICATED BY A. MESTON.] 



[Read before the Royal Socicti/ of Queensland, 16th March, 1894.] 



Thia Lecture, descriptive of the fauna and flora observed on the 

 journey to Port Essington, was delivered by the lost explorer in Sydney in 

 IS-IS. Mr. Meston found the MS. in the possession of Mr. Robert Lynd. 



