56 TERTIARY OR CAINOZOIC AND RECENT ROCKS,—\OASE XI. 
8. LIMESTONE. Map No. S 72. 
Hope’s Mill, Moorabool River. 
4 sheet 24 S.E. 
Composed of spines of echint and 
fragments of polyzoa; makes a good 
building lime. 
9. LIMESTONE. Map No. § 74. 
Same locality as the last. 
See specimen No. 8. 
Note.—A company was formed for the purpose of working this 
limestone for phosphate of lime; but, as will be seen from the following 
analysis by Mr. J. C. Newbery, it contains no phosphates whatever :— 
7. LIMESTONE. Map No. S 78. 
Spring Creek, Barwon River, 
Barrabool, 34 sheet 24 S.E. 
Soft, earthy limestone, enclosing sand; 
good for burning. 
Insoluble matter D $ on on aE 
Sesqui-oxide of iron ... eee -r 0'344 
Carbonate of lime an nee T ... 90356 
Magnesia ar see os i trace 
Water’ nn at oe th _ 1809 
99:300 
The banks on either side‘of the River Moorabool, in the neighborhood 
of Hope’s Mill, are occupied by this limestone (specimens 8 and 9). The 
percentage of earthy matter in it is very small, and it would afford 
excellent lime for building purposes. 
10. Limestone. 
Moorabool. 4 sheet 24 S.E. 
Containing large echini spines, corals, 
shells and polyzoa. 
: w 
11. LIMESTONE. List No. ziy, 
Sections 1 and 2 Durdidwarran, 
and sections 188,194, Darriwell. 
4 sheet 19 5.W. 
Fossiliferous limestone from hard 
siliceous rock, underlying the older 
basalt and Upper Miocene. Probably 
of Lower Miocene age. 


12. SEPTARIAN LIMESTONE. 
Schnapper Point, Hobson’s Bay. 
Very argillaceous, and containing 
polyzoa. An analysis by the late Mr. 
C. S. Wood gave as under :— 

Carbonate of lime ... 82'012 
sa magnesia 1:506 
» jron as 3472 
Clay and sand 10:427 
Soluble silica Yn RW 
Water ute an IKs 
Organic matter and loss 0:054 
100'000 

This limestone (No. 12), probably of Upper Eocene age, is a sample 
of the stone used by the late “ Schnapper Point Cement Company.” The 
percentage of siliceous matter is too low for a good hydraulic lime. 
Its 
power of hardening under water would be considerably increased by the 
addition of clayey matter in such proportions, as to raise the quantity of 
silica to about 25 per cent. 
13. LIMESTONE. 
Keilor. 4 sheet 1 N.W. 
14, 15, 16, and -17. SILICIFIED 
Foss1zj Woop. Map No. _W 
T™M 7. 
From the same locality as specimen 
No. 11, 
18. FERRUGINOUS SANDSTONE. 
List No. R + 
Mordialloc. aS oa CHE 
Soft and fine-grained; forms cliffs 
along the east coast of Hobson’s Bay ; 
contains 24°26 per cent. of iron. 
19, SHELLY CRAG. List No. R(Fsm). 
Mordialloc. 
Upper Miocene, 
