Mar. 31, 1908. The Queensland Naturalist. 
29 
informed me that his MS. copy of the Baron’s paper lias been 
mislaid, so that I cannot give his list. ])r. Jack had in 
the meantime re-stated his belief in tlie Ipswichian age of 
the beds, and placing them tentatively “ below the thick 
Murphy s Creek Sandstone and the Clifton Coals and Shales, 
which give the same fossil plants as the sha’es associated 
with the coal-seams of Ipswich proper ” — that is, he puts 
them low down in the Jura-Triassic. 
Ten \ears ago I commenced to map in detail the area 
in question, during spare time, and in a desultory' manner, 
broken by long absences. I commenced in the Palaeozoic 
region to the west, and have worked eastward, and now 
live practically on the beds in question. Sdou after at- 
tacking the “ Ipswich ” series I found it impossible to 
run ’ the lines of certain loose conglomerates, sandstones, 
clays and brick earths, without introducing a perfectly' 
impossible series of faults cf which there was no evidence 
w'hatever. or of complex folds which certainly did not 
exist. But the stratigraphy was readily explicable on the 
supposition of an overlap or unconformity. I was driven 
to this conclusion. I did not start witli it as an explanation, 
and I was naturally inclined to give much weight to tliose 
who knew the Ipswich Beds better than myself. 
Then our member, Mr. Hurworth, kindly' took me to 
the roadside quarry between Oxley and Darra, which I name 
in gratitude the “ Hurworth Quarry,” where we found a 
wonderful series of dicotyledonous and other leaves w'liiclx 
settled the question. I brought to the investigation a long 
experience of Tertiary rocks, acquired in all four quarters 
of the globe — and Mr. Hurworth supplied the key to all 
Tuy difficulties. I have since showed the evidence to 
several competent geologists, among others, to Messrs. 
Green of our club, Wearne, of the Technical College. Ipswicli, 
and Brittlebank, of Victoria, and all are convinced. In- 
deed, Mr. Green informed me that years ago, while mapping 
tlxe Brisbane area for the Geological Survey , he had been 
peiplexed at finding certain beds lying unconfonnably 
upon the Ipswicli near Bcggo Road railwav station ; as 
usual, they were explained away. 
Such is the story of these interesting beds. Tlxeir 
nnal recognition adds a new Formation to Queensland 
geoffigy, and a fresh page to her history. The credit of 
their discovery belongs to Mr. Stokes, and I am proud to be 
able to demonstrate that his acumen led him to the liglit, 
and that the oblivion that shrouded his discovery has been 
on y a temporary eclipse. I will now' briefly describe the 
beds, and epitomise the evidence which is so clear that here- 
after no one can ever doubt that the Brisbane Tertiaries 
