! 
PRIMARY OR PALAZOZOIC ROCKS.—OASE VIT. 
34 
engineering purposes. 
collection © 
maine, San 
have bee 
f dressed building stones. 
dhurst, Maryborough and other goldfields’ towns, quarries 
n opened, and the stone has been used in the construction of 
Examples of some of them are exhibited in the 
In the neighborhood of Castle- 
some of the banks and other public and private buildings. 
Flagg 
districts. 
ing.—Excellent, blue flags or paving-stones occur in several 
Those procured from Specimen Gully, near Castlemaine, 
are most extensively used, and will doubtless, ere long, supersede the 
imported Scotch flagging. 
Slates —Roofing-slates have been procured from several localities ; 
but the 
inferior. 
of the Macalister River, in Gippsland. 
quality of those hitherto brought into the market is very 
The best, as yet, are from Glen Maggie Creek, a tributary 
No quarry has been opened 
there, and probably the cost of transport would preclude the slates being 
raised profitably at present. 

Case VII. 
LOWER SILURIAN. 
(METAMORPHIC IN PART.) 
1, MICACEOUS SCHIST. 
Map No. Rb 298. 
Section 8, Sutton Grange. } sheet 
13.N.W. 
Mottled, with peculiar grey micaceous 
bands. 
2. Mica SCHIST. 
Begg’s Station, near Hopkins’ Hill. 
The mica disposed in very thin layers. 
3. GNEISS. Map No. R 95. 
N.E. of parishof Baynton, 4 sheet 
51 S.W. 
With decomposed felspar. 
4, METAMORPHIC SCHIST. 
Map No. Re 26. 
South sideof Hardie’sHill. + sheet 
63 S.E. 
Gritty, with quartz grains in layers. 
5. METAMORPHIC SCHIST. 
Map No. Rc 30. 
West of Leigh River, opposite 
Hardie’s Hill, 4 sheet 63 S,E. 
Of a peculiar greenish-grey color, 
fracture slightly hackly, having a tal- 
cose appearance, with a little silvery 
white mica. 
6. SPOTTED SHALE. 
Map No. Rb 12. 
Happy Gully, parish of Sedgwick. 
4 sheet, 13 N.W. J 
The markings are probably due to 
the development, by metamorphic ac- 
tion, of some augitic (fahlunite) mineral. 
This peculiar kind of shale is only found 
near the junction of the granite and 
Silurian rocks, as at Lancefield, Bayn- 
“ton’s Range, the Barfold Ranges, &c. 
7. YELLOW SHALE. Map No. Re 30. 
West of Leigh River, opposite 
Hardies Hill, i sheet 63 S.E. 
Laminated and quartzose. 
8. Mica ScuisT. Map No. Rb 17. 
North of Mount Emu, Sedgwick. 
4 sheet 13 N.W. 
Grey, micaceous bands between yellow 
sandstone. The bands are of about equal 
thickness. 
9, METAMORPHIC SLATE Rock. 
Map No. Ra 95, 
Dunolly Road, $ sheet 14 N.W. 
A band of mudstone occurring between 
a light-blue, metamorphic rock, with 
spots and markings similar to No. 6. 
