94 THE VICTORIAN NATURALIST. 



Bore No. i is in Yeth Youang, about Y2 mile S. of Muston's 

 Creek, and between it and the Hopkins River, distant from the 

 latter about i mile. Bores 2 and 3 are in Hexham West, the 

 former about 3 miles N.N.E. from bore i, and the latter a little 

 over I mile N. from bore 2. 



Bore No. i was sunk in a depression close to a basalt ridge. 

 To the west and south of it basalt is distant about ^ mile. This 

 bore reached a total depth of 68 feet, through clay and stone, 

 probably limestone. Good water was struck, but no shells were 

 observed. 



Bore No. 2 is on the south-eastern side of a ridge of basalt. It 

 passed through, in descending order, 6 feet clay, 23 feet basalt, 

 123^ feet clay, 333^ feet drift sand, to a total depth of 75 feet, 

 when it had to be abandoned, as sand prevented the casing from 

 being forced down. No Mollusca were found in this bore, but 

 Foraminifera and Bryozoa occur in the fine argillaceous and 

 slightly calcareous sand from the lower portion. Possibly fossil- 

 iferous clays are present beneath the sand. Brackish water was 

 met with in this bore. 



Bore No. 3, the most northerly one, was sunk on the opposite 

 side of this ridge of basalt, and in an area not covered with 

 basalt. This area extends westwards for some 3 miles, where in 

 a creek a good deal of limestone may be seen. Similar limestone 

 was also found in some drains near the bore, but whether or not 

 it is fossiliferous is not stated by Mr. Hood. Good water was 

 struck in this bore, which passed through a succession of clay 

 and stone to a depth of 63 ^ feet. This stone is probably lime- 

 stone, since pieces of such rock show as nodules among the 

 material. 



The fossils now recorded were found in a bed of clay, 4)^ 

 feet thick, at a depth of 56 feet. As might be expected from a 

 water bore, much of the shell material occurs as fragments, but a 

 few small shells occur entire. They include upwards of 20 

 species, which have the same facies as those of Mornington and 

 Altona on the east, and the lower beds at Muddy Creek, near 

 Hamilton, on the west. The general appearance of the material 

 also greatly resembles that of the localities quoted, and the new 

 beds probably belong to the same horizon as they do. 



This occurrence of Older Cainozoic fossils near Hexham, and 

 already known marine fossiliferous beds, especially those at Dean's 

 Marsh, Birregurra, Camperdown, and Pilfield, leave little reason 

 for doubting a former continuous connection between the Older 

 Cainozoic deposits of the Geelong and Mornington districts and 

 the Moorabool and Leigh valleys on the east, and those of 

 Muddy Creek on the west. 



Moreover, since the fossils found indicate clearly an Oligocene 

 or Eocene period for the containing deposits, it seems probable 



