BY A. N. LEWIS. M.C.. LL.B. J3 



visited the district during the 90's, but no written reports 

 can be found. 



The present writer had the plans of Mr. Twelvetrees 

 and Mr. Reid with him on the 1922 trip, and made full use 

 of them as far as they extended. 



The writer also wishes to acknowledge his indebtedness 

 to all the members of the parties for the assistance rendered 

 throughout the trips, to Sir T. W. Edgeworth David for his 

 kind encouragement and suggestions, and to Colonel D. A. 

 Lane for assistance rendered in drafting the plans accom- 

 panying this paper. 



2. PHYSIOGRAPHICAL GEOLOGY, 

 (a) Present Topography of Area. 



The north of the district in question is marked by the 

 line of elevated country extending from Mt. Mueller (about 

 4,000 feet) bn the east about ten miles westward to Mt. 

 Wedge (about 3,500 feet) and produced for three miles 

 southward by the bold outlier, Mt. Bowes (2.500 feet). These 

 hills form the watershed between tributaries of the Gordon, 

 Derwent, and Huon Rivers. The valley of ths Weld, 

 which runs through the centre of our area, the divide be- 

 tween the Weld and the Huon, and the north-eastern portion 

 of the valley of the Huon make up the area here described. 



The Weld rises in many small streams in the centre of 

 the range above mentioned between Mt. Bowes and Mt. 

 Mueller. It is separated from the Styx for the first few 

 miles of their courses by a watershed consisting of a con- 

 fused series of small ridges densely covered with forest, 

 among whi^ch it is difficult to tell which river many of the 

 streams ultimately reach. The Styx, after flowing a few 

 miles in a south-easterly direction, bends to the east, and 

 passes out of the area with Marriott's Look-Out and the 

 hills south of Tyenna on its north bank, and the Jubilee 

 Range, Snowy Mountains, and Mt. Styx in succession on its 

 .south side. To the west the watershed of the Weld is 

 separated from that of the Huon first by Mt. Bowes and then 

 by a scarcely perceptible ridge joining that mountain to Mt. 

 Anne, and farther south by the Mt. Anne range. 



The Weld flows in a south-easterly direction for about 

 twenty-five miles, the first five of which are through a broad 

 valley with numerous insignificant ridges. Opposite Mt. 

 Anne its course becomes a tremendous gorge with precipi- 

 tous, scrub-covered sides rising to the eastern spurs of Mt. 

 Anne on the west, and to the Jubilee Range on the east. 



