396 
great bight in Middle Tertiary times, running up into Victoria and New South 
Wales, and comprising the Darling, Lachlan, Murrumbidgee and Murray 
basins. 
This deposit looks promising for water, since in bore No. 3 (Mallee) it 
was met with soon after passing through a similar bed.” 
The fossils found in the washings at this depth are — 
Foraminifera— 
Miliolina vulgaris, d’Orb. sp. 
Clavulina angularis, d’Orb. 
Truncatulina reticulata, Czjzek sp. 
Pulvinulina elegans, d’Orb. sp. 
Polyzoa— 
Entalophora australis, Busk. A species found hitherto as a fossil 
in the Balcombian of Muddy Creek, and also living on the 
Australian coast. 
Although nothing of a restricted kind appears amongst these fossils, 
the quantity of broken polyzoa and the richness of the microzoic fauna 
(unfortunately much water-worn and specifically unidentifiable), shows this 
sample to be well down in the Tertiaries. 
Tiega Bore, No. 22. 
The reduced level of the surface of the ground above sea-level is 176 feet. 
Depth of bore, 1,040 feet. Reduced level of the bottom of the bore - 864 feet. 
This bore is situated a little to the north-east of Walpeup, and is due 
south from Yatpool. Water was struck at various levels in this bore ; all 
the samples are salt. From an examination of the engineer’s report, the 
Recent to Werrikooian appears to extend down to 286 feet, when probable 
Kalimnan blue clays with shells are in evidence. This series may extend 
to 399 feet, when polyzoa! rock occurs down to 766 feet. After this, the 
dark-coloured carbonaceous clays and sands occur throughout. From the 
fact that the upper beds in the fine of bores shown in Fig. 42 show a 
parallelism in the thickness of the strata, it is clearly demonstrated that this 
brown clay series of the Tiega bore is in part comparable with the polyzoal 
rock of the preceding bore (Walpeup) at 800 feet or thereabout. - This 
Janjukian age of the carbonaceous clays has since been confirmed by the 
detailed examination of a sample from 770 feet in this series, containing 
numerous examples of Pulvinulina scabricula, a restricted Janjukian species, 
and also fragments of Trigonia lamarchi, met with elsewhere at the top of 
the Janjukian. 
Yatpool, near Mildura, No. 68. 
Reduced level of surface of ground above sea-level, 162 feet. Depth of 
bore, 1,410 feet. 
A sample of this boring from about 450 feet was submitted to me, 5th 
December, 1911, and I reported to Mr. A. S. Kenyon as follows :— 
“ This sample yields about ten fossils, none of which are restricted to 
particular horizons, though they are commonest in the Spring Creek fauna. 
The rock and fossil contents resemble the stiff clays found above the water¬ 
bearing strata in the earlier bores (Nos. 1-11), so that the chances of striking 
water by deepening the present bore are rather favourable than otherwise.” 
Subsequently fresh water was struck at 900 feet. 
