f4 



quartz traverses the country for a considerable distance, in 

 several parts of whicli the proprietor has discovered cupri- 

 ferous indications. 



"Water seems to be readily enough obtained for sinking in 

 this part of the country. Mr. Mitchell has two excellent wells 

 of water on his estate, one of which is situated about half a 

 mile away on the farm, and the other, which is close by the 

 stables at the homestead, was sunk to a depth of 70 feet 

 through a hard blue slate. The water in this well, from which 

 a never-failing supply is obtained, is also passably potable, and 

 has risen fully twenty feet in the shaft. 



BuRRA. — In a cutting immediately north of the Burra Creek, 

 the rocks dip westerly. On visiting the Burra, about seven 

 years ago, I accurately determined the dip of a marble band 

 and surrounding beds to be easterly. The section is in the 

 bed of a small creek immediately north-west of the deserted 

 smelting works, and situated about three-quarters of a mile to 

 the east of the railway cutting. This reversal of the dip of 

 the beds clearly points to the existence of an anticlinal axis 

 between the two points, and the prevailing dip of the rocks 

 in the neighbourhood being easterly, in all probability a syn- 

 clinal axis occurs in the beds a short distance west of the Burra 

 railway station. 



List of Regent Echini of South Australia. 

 By Professor E. Tate, A.L.S., F.G.S , &c. 



[Kead October 3, 1882.] 



Goniocidaris tubaria, Lamarck. 

 Very general (jR.T.), ranging from Port Jackson to Euclaon 

 the frontier of A\^est Australia. 



Strongylocentrotus eurythrogrammus, Valenciennes. 

 In shallow water. Port Adelaide, St. A'incent's Gulf, 

 Fowler's Bay (B.T.). 



Sphaerechinus Australiae, A. A(jassiz. 

 AVashed ashore on the sandy beaches of the South Australian 

 coast (Tenison Woods, Proc. Lin. Soc, N.S.W., vol. ii.). 



