5 2 
The Australasian Scientific Magazine, [Sept, i, 1885. 
The community — or settlement, as it is called — numbers something less 
than one hundred, and is one of the two settlements in Dade County, 
the other being Miami, the county seat. Dade County embraces 7200 
square miles of territory — almost as large as Wales — and its population was 
in 1880 just 257 — that is, one to every twenty-eight square miles. Lake 
Worth has an hotel, but no church, schoolhouse, nor gaol ; has no roads, 
but all travel is done in boats and on foot. Mail once a week. Life 
frontier. Population mixed — Americans from ten different States, English- 
men, Irishmen, Swedes, Norwegians, Minorcans, negroes ; and, withal, a 
peaceful, law-abiding community. The present settlement was started some 
fourteen years ago. 
REPORT ON THE GENERAL GEOLOGY OF THE 
YORKE PENINSULA, WITH REFERENCE 
TO THE PROBABILITY OF ARTESIAN 
WATER SUPPLY BETWEEN CLINTON AND 
CURRAMULKA. 
BY 
HENRY Y. L. BROWN, F.G.S., F.L.S., Etc. 
(Government Geologist of South Australia). 
The greater portion of the hundreds of Clinton and Maitland, and 
portions of the hundreds of Kilkerran, Cunningham, and Curramulka are 
constituted of granite and metamorphic rocks, which, with overlying patches 
of Palaeozoic limestone, marble, grit, conglomerate, and sandstone, covered 
over with a thin capping of tertiary deposits, which prevents their being 
seen more frequently at the surface. In these hundreds, the older rocks 
obtain their greatest elevation, which is about 500 to 600 feet. Over the 
remaining portion of the Peninsula the covering of tertiary and recent 
formation is thicker, and together, with the older rocks, at a lower 
elevation, the latter being chiefly seen to out-crop at various points on the 
sea-coast ; they doubtless, however, are close to the surface at many places 
inland, although not visible. 
