4 
In tlie l)orc at Ileatlicote the EsUieria valves were found by Mr. C. S. 
AVilkinson, l)iit only on one horizon, a bed of shale at 1,009 feet from 
Ihe surface, and about 501 feet above the highest seam of coal struck at that 
locality. 
The bore recently ])ut down at Nnrraheen by Mr. Coghlan is said by 
that gentleman to have reached a dc})th of 1,980 feet odd. AVe have been 
favoured by him with two examples of Esthcria, from a depth of 1,9G1 feet, 
but the general features of the strata passed through have not yet been made 
public. 
The bore on the Moorhank Estate, George’s llivcr, near Liverpool, 
appeared to Mr. T. AA". E. David and the writer, during a recent inspection, 
to have started at or about the junction of the AVianamatta Shales and the 
llawkesbury Sandstone. At the time of onr visit the boring o})crations were 
in abeyance, but as near as coidd be ascertained, a depth of about 1,080 feet 
had been reached. The lowest portion of the core presented all the apiiear- 
ance of the Narrabeen Shales, hut no evidence of the drill having reached the 
Estheria Shales presented itself. 
The following table shows in abstract the depth from the surface at 
Avhich the various if.9/'//erh/-bearing shales were struck in the respective bores; 
and, Avhen knoAvn, the thickness of the bed, and its height above the highest 
coal seam met Avith in each bore. 
N.ame of Bore. 
Moore Park 
i)ont’.s Creek 
Port Hacking 
] leatlicote 
Narrabeen 
J.iverpool 
l)e])th ill feet 
from surface. 
Thickness in 
feet of Kstlicria- 
bearing shale. 
Height above 
first Coal Seam. 
Authority. 
feet. 
ft. in. 
feet. 
I..")!';! 
;io 0 
1 
i,r.4;i 
k-80 0 
( 'ox 
;u 0 
1 
1 ;; 
8GG 
poi'n 
h' 1 
G0:i 
j 
1,G.A] 
1,9 ir» 
l,9.‘ii' 
U 0 
0 0 
.’>77 
;;i;j 
lf96 
> David 
:f,U0U 
10 0 
228 
J 
iklGO 
Cox 
] ',009 
1,901 
1,080* 
;i 0 
.914 
David 
Coghlan 
]iot reached 
Untiiiished. 
