VI. 
PBEFACa. 
sources, a Geological Map of the Colony has been compiled with some approach to 
accuracy, although in many cases all that could be ascertained was that a certain deposit 
occupied a given position, the boundaries having to be guessed at from the compiler’s 
knowledge, whether at first or second hand, of the topography of the district in question. 
The first Geological Map of the Colony was a Sketch on the scale of about a 
hundred miles to the inch issued with the late Mr. Eichard Daintree’s Paper “ On the 
Geology of Queensland,” read before the Geological Society of London on 24th April, 
1872. The next was a hand-coloured Map on the scale of sixteen miles to an inch, 
prepared by me for the Colonial and Indian Exhibition of 1886, and which was published 
in the same year under the authority of the Department of Works and Mines on the 
reduced scale of thirty-two miles to an inch. The third is that on the scale of sixteen 
miles to an inch, issued with the present Work. 
As this Work is, to a large extent, based on oflicial Geological Surveys, it may 
be well in this place to give a brief account of the personnel and a list of the publications 
of these Surveys. 
Prior to the separation of Queensland from New South Wales, the late Rev. 
W. B. Clarke, P.E.S., &c., was employed by the Government of New South Wales in the 
Northern District of that Colony, as it now stands, and extended his observations into 
the Darling Downs and Moreton Bay Districts, which arc now included in Queensland. 
In a letter, dated 14th October, 1853, addressed to the Colonial Secretary of New South 
Wales,* Mr. Clarke described the Condamine Basin and the Creeks of the Darling 
Downs, with their included Marsupial and other remains, the trappean rocks of the 
Upper Condamine, the auriferous alluvial deposits of Lord John’s Swamp, the slaty 
rocks of Pikedale, and the portion of the Coalfield on the Condamine Waters. 
Mr. Samuel Stutchbury, E.G.S., Curator of the Bristol Philosophical Institution, 
on the recommendation of Sir Henry De la Pcche, was appointed Geologist for the 
Colony of New South AVales on 27th December, 1850. Sir Henry described Mr. 
Stutchbury as “ highly qualified for the service, and well instructed in our mode of 
work on the Geological Survey of Great Britain.” Mr. Stutchbury held the appoint- 
ment till the end of 1855, and from October, 1853, was employed chiefly in the Southern 
portions of what is now Queensland, having extended his observations northward to 
Keppel Bay, when the state of his health obliged him to resign and return to England. 
Mr. Stutclibury’s Reports were issued tri-monthly, and published as Legislative 
Assembly Papers. The first to deal with a portion of Queensland is the Tenth, of 
which I have never seen a copy. It appears to have been descriptive of “ The Eastern 
Ranges opposite the Berrigal Station.” 
The Eleventh Report, dated from the Darling Downs, 1st October, 1853, deals 
with the same neighbourhood, and portions of the Dividing Range between Queensland 
and Now South W ales, and is accompanied by a Geological Map of the district between 
the Nandawar Range in New South Wales and Talgai in Queensland. 
Legislative Assembly Papers, N. S. Wales, fop., 1853. 
