452 T. W. E. DAVID AND E. F. PITTMAN. 
chocolate shales were struck at 787 feet, and the cupriferous tuffs. 
at 1,728 feet. The total depth of this bore was 2,307 feet. 
The results of these bores 6, 7 and 8 proved the Bulli Seam to 
have a dip from Coal Cliff, where it outcrops near sea level, to 
Holt Sutherland at arate of about 139 feet per mile. The height 
above sea level is 132 feet.* 
(9.) At the Liverpool Bore, situated on the Moorbank Estate,. 
three miles southerly from Liverpool near Sydney, three small seams. 
of coal, probably representing in the aggregate the upper division 
of the Bulli seam, were struck at depths of 2,4932 feet, 2,507 
feet 7 inches, and 2,532 feet 8 inches ; their respective thicknesses 
being one foot five inches, one foot four inches, and two inches, 
and the lower division of the Bulli Seam six feet six inches thick 
was struck at 2,584 feet 10 inches. 
(10.) The first Cremorne Bore put down by the Department of 
Mines on the shores of Port Jackson, near Mossman’s Bay, struck 
the main Bulli Seam, here probably representing a combination of 
the two seams struck at Heathcote and Holt Sutherland, and of 
the four seams struck at Liverpool at a depth of 2,801 feet 9 inches. 
As however, the seam was much intermixed with dyke material 
and wholly calcined, this thickness must be considered as only 
approximate. Ata depth of 2,838 feet 9 inches a dolerite dyke 
was struck, which was not completely penetrated until a further 
distance of thirty-four feet four and a-half inches had been bored. 
The bore was continued to a depth of 3,095 feet without proving 
any other coal seams of importance. The following small seams 
however were penetrated :—one foot one inch of clayey calcined 
coal at 2,829 feet 6 inches; one foot two inches of dirty splint 
coal at 2,898 feet 3 inches ; one foot of coal at 2,941 feet 2 inches; 
five feet of carbonaceous clay shale passing downwards into about 
one foot of clayey coal at 2,947 feet 2 inches ; two feet four inches 
of coal at 3,020 feet 2 inches; one foot four inches of coal and 
bands at 3,030 feet ; five inches of coal at 3,054 feet 11 inches. 
* Annual Report, Department of Mines for 1883, p. 197. 
