times, from tlie base of Day's Hill to Mouut Livingstone. At 

 Day's Creek, on the southern base of the former hill, erosion 

 has lain bare several interesting sections of the strata, showing 

 numerous intrusive dykes intersecting the beds of quartzite, 

 gneiss, and mica schist, which form the metamorphic rocks at 

 this place. These dykes are dioritic, felsitic and, probably, 

 diabasic, and have all altered the bounding rocks to a more or 

 less distance from contact. One noticeable feature of them is 

 that the mica schists, in the passage downw^ards, pass into a 

 rock resembling that variety of the felspar-group known as 

 porphyritic gneiss. 



On the w^estern slopes of Day's Hill are deposits of Tertiary 

 auriferous gravels, fully 100 feet above the present level of 

 Livingstone Creek. These gravels form part of w^hat was evid- 

 ently a continuous mass extending to the base of Mount 

 Livingstone, about three miles distant, and now partially de- 

 graded by the erosion of the Livingstone Creek. The upper 

 portion of these deposits consists of rounded fragments of 

 various rocks, now found in situ, such as quartz, mica schist, 

 gneiss, feist ones, diorites, &c., in every stage of decay, from 

 exfoliation in concentric layers to kaolin and magnesian clay. 

 It is at the bottom of these gravels that the auriferous w^ash- 

 dirt occurs. At Dry Hill, near Mount Livingstone, they have 

 been exposed by mining operations to a depth of 60 feet, and 

 are here seen to rest on w^hat is locally called a "false bottom" 

 of decomposing boulders of igneous rock of larger dimensions, 

 to a depth of 40 feet, where the bed rocks occur. The boulders 

 are evidently derived from volcanic caps similar to those re- 

 maining in situ. The bed of the ancient lake has been eroded 

 on three sides, and the surrounding hills degraded. It is 

 stated that there are at least four of these lake basins along 

 the valley of the Livingstone Creek, which have been drained 

 by the creek having cut through their margins. 



In the basin of Dry Grully (one of the creeks which has 

 eroded its passage along the margin of the ancient lake) are 

 rich auriferous reefs, intersecting the metamorphic schists, the 

 quartz becoming highly pyritous at a depth of 100 feet and 

 lower. The following minerals have also been found in the 

 neighbourhood : — Phosphate, carbonate and sulphide of lead, 

 silicate and carbonate of coj^per, native silver, argentiferous 

 galena, rutile, black tourmaline plentiful in quartz seams, 

 librolite, micaceous iron-ore, &c. From Mount Livingstone, 

 which is made up of argillaceous and micaceous schists with 

 bands of nodular argillaceous schist and gneiss, the sectional 

 line crosses some fine uplands of limited extent, as at Jim and 

 Jack and Parslow's Plains, where large masses of granite are 

 seen to form the principal rock. On the spurs to the east of 



