ON THE WAIANAMATTA SHALES. 85 
matter. It is a very pure fire-clay, with so little iron in it as to 
render it very valuable for fire-resisting purposes. 
ring for coal at Moore Park by the Diamond Drill Co., 
at 20 feet above the sea, the section gave 143 feet loose sand, 900 
feet false-bedded sandstone with occasional shaly seams, but no 
reco: 
selves were kept for exhibition at the Garden Palace, and where 
they were destroyed by fire. A band of ironstone 263 feet thick 
certain patches of shale would be found to answer as well as any 
dense and bears less heat than the former. Bricks have 
made from the shale from a very early date in the Colony. They 
are largely made from the shale at Lithgow ; at Waterloo, by 
Messrs, Goodlet & Smith ; and at the Oaks’ brick-works, at Neutral 
Bay, and other places. In the latter locality the shale is parti- 
cularly free from iron and grit and contains more alumina, so that 
a very white brick comes from the kiln. It is very tough, and 
being aware that no finer fire-brick could be found than that 
ant all the reasons previously given, I think that the term 
Waianamatta formation” should be abandoned by geologists, as 
hot being represented by any distinct group of rocks. 
thoroughly acquainted with the locality, and showed me, during 
many days’ research, every point of interest and importance. 
