142 
Geology and Physical Geography ; 
equal in size to Northumberland has been proved to contain coal 
seams at various localities round the edges, and also in the central 
portions. 
As regards the Cape Otway and Wannon districts the indica- 
tions are not so favorable, though geologically their Mesozoic 
rocks are identical with those of Gippsland and Western Port. 
At Coleraine are small seams of an inferior description of coal, 
the largest seam being about 20 inches in thickness. A small 
seam of good coal exists near Colac, but it is not large enough to be 
profitably worked, and of several diamond-drill bores put down in 
the district to nearly 1,000 feet, not one revealed the existence of 
another seam. 
The deep bore at Portarlington, over 1,500 feet, passed through 
no coal, though carbonaceous Jaminsc occurred in all the cores of 
rock brought up. 
The same result attended the bore at Winchelsea, which was 
carried to a depth of more than 2,100 feet. 
Some small seams of good coal occur near Apollo Bay, but 
have not been sufficiently explored to admit of a definite opinion 
being formed as to their probable value. Altogether, the pro- 
spects of a workable coal-field west of Port Phillip are very 
slender. 
In the eastern Mesozoic area the evidences are of a far more 
encouraging description, and, as before stated, there is a largo tract 
beneath which extensive coal mines are likely at no distant date to 
be developed. 
Concerning a number of the known and earlier discovered seams 
of coal and their modes of occurrence, information will be found 
in the Geological Progress Reports ; but I propose here to recapitu- 
late the main features of that information, and can do no better 
than repeat the description given in Progress Report No. YU., 
with additional observations as to discoveries and developments 
eflocted since its publication. 
Coal has been proved to exist in various localities throughout 
the area under notice. Along its southern or coast boundary, 
along the northern or inland margin, and at several places in 
central portions. 
Commencing at the coast-lino, and proceeding south-easterly 
from Griffith’s Point, the following are the principal known coal 
seams : — 
The Sandy Waterholes seams are exposed in cliff section on 
the coast, about, 5 miles from Griffith’s Point, and are five in 
numbor, all within a total thickness of 50 feet. The two middle 
ones, 2 feet apart, are each from 18 inches to 24 inches thick, the 
others being smaller; they dip inland, and it is stated that, in a 
shaft now filled in, situated 100 yards back from the cliff, a seam 
was cut which showed a thickness of 24 inches of coal. 
