18 Proceedings of the Royal Society of Victoria. 



of which is over 1000 feet above the level of the creek below. 

 Another elevated porphyritic peak, known as Granite Rock, rises 

 a short distance to the north-east of Clifton. This is about 500 

 feet in height and from its summit a magnificent panoramic view 

 of the surrounding country is presented. Between these two 

 hills the auriferous silurian rock crops out. A series of sandy 

 ridges, evidently of marine origin, occupies the sui-face from the 

 southern flanks of the hills to the Mitchell River, the general 

 fall of the country being in the same direction. Boulders of 

 sandy ironstone occur here and there on the ridges, but none of 

 those collected from a greater elevation than 200 feet above sea 

 level contained fossil casts. 



On the lower terraces the soil, which has been derived from the 

 calciferous rock below, or from the decomposed ironstones, is 

 fairly fertile. The upper sandy ridges are heavily timbered with 

 eucalypts. The gravel terraces, though much less extensive on 

 this side of the river than on the other, yet show in nearly all the 

 sections exposed in gullies or road cuttings. On the banks of 

 Boggy Creek, which has cut its way through some hundreds of 

 feet of porphyritic rock, the auriferous terraces extend for over 

 120 feet above the present bed of the stream. Owing to the con- 

 siderable mining operations formerly carried on in this creek, 

 the bed in the lower portion of its course has become silted up, 

 and the heavy sand is now filling the Mitchell. It is intereeting 

 to note that by the combined action of Boggy Creek and the 

 Mitchell River an isolated strip of calciferous rock has been left 

 in the midst of an extensive flat. The next gully, Dreverniann's, 

 commences at Mount Lookout, and has been formed by a stream 

 which has cut its way through the sandy drifts as far as Knight's 

 house, on the Wuk Wuk road, and tlience through tlie Bairns- 

 dale limestones to the Mitchell. The only other stream of 

 importance is Clifton Creek, which drains the silurian, devonian, 

 and porphyritic hills to the north. After passing Hamilton's 

 house it flows through a wide flat, thence through Boyd's, where 

 it is bounded by silurian strata on the west, and the sand drifts 

 and porphyritic rock on the east, and finally passes into Clifton 

 morass. This is about two miles in length, and tapers from a 

 mile in width at the upper end to a narrow channel at the lower. 

 A big flood, which occurred about ten years ago, cut a cliannel 



