ON THE WAIANAMATTA SHALES, 79 
Shaft No. 3, 675 feet above sea-level. 
er er adh Hei ae ret 9 feet. 
Jointed sandstone and layers of shale se ns Hage 
one os, a see sie 222 os 
Shale... ip Pie si bine sie 65 
Sandstone and shale ... A Sede ant ies 
Total thickness of strata ... 2514 feet. 
Shaft No. 4, about 721 feet above sea-level. 
RY oe vi Jey YUE na yr 10: feet 
Jointed sandstone and layers of shale ... 174 ,, 
Shale aoe aus tee eee ose 14 ” 
Sandstone 25 ” 
Shale... 
Sandstone 1173 55 
le eee ” 
Sandstone 1D yy 
ale “a 4 ” 
Sandstone a rie sss | ON os 
Total thickness of strata ... 2963 feet. 
Shaft No. 5, 752 feet above sea-level. 
J ar a se ; shi BE 8 feet. 
Shale... sae Aa ave tye iA” de gs 
Sandstone Des iy Sie ae ats + Se! 
Shaly sandstone ie see Pye Peg thee 
Sandstone a eo ye 200° 65 
Total thickness of strata ww 924 feet. 
It will be observed that these shafts were sunk outside the 
Waianamatta basin, as laid down in Clarke’s map, but the limits 
of that map are merely sketched in, and in any case the shafts 
Sunk in the portions marked as Waianamatta are just of the same 
ster as those specified above. I found in all beds of shale of 
bs thickness alternating with Hawkesbury sandstone. 
- The shales of Sugarloaf, Kenny's Hill, Razor-back, &c., not 
8 of a former peda 0s i evident from the fact that 
iat oveupy such different levels, and there are no faults or dis- 
ons to account for it. It is remarkable that, though there 
