Reviews —Jack and Etheridge— Geology of Queensland. 279 
where did it come from, and where has it gone? and that so gradually 
as to lay down our Orags so uniformly—until disturbed by passing ice- 
sheets; but I have found that it is the nature of the ocean, especially 
at the Poles, to find its level according to the height of the ice-cap. 
That some natural law was at work to cause this there can be no 
doubt, and this is to be found in the attraction of the accumulated 
mass ofice. A continent of ice 5400 miles in diameter, with an average 
of six miles in thickness above the normal level, must exert a very 
appreciable amount, especially as this is accumulating at the same 
time that the ice at the North Pole is losing its attractive power. 
But we shall have to clear away some of the cobwebs of science— 
especially astronomical—before men’s minds are free and unbiassed 
enough to approach the consideration of this question from this 
point of view, so here I must leave it for the present. 
d5e, Jen Wr aE IE WAY Se 
st 
Tue Gronogy AND PanmonroLoGy OF QUEENSLAND AND NEw 
Guinea. With sixty-eight Plates and a Geological Map 
of Queensland. By Rozsert L. Jack, F.G.S., Government 
Geologist for Queensland; and Rosert Hrusripes, junior, 
Government Palzontologist (New South Wales). Published 
under the authority of the Hon. W. O. Hodgkinson, Minister 
for Mines, etc., Queensland. Crown 4to. pp. xxx. and 768. 
Plates 68, and Map of 6 sheets. Brisbane: Beal. London: 
Dulau & Co., 1892. 
O bring within the compass of a single volume a description of 
the Geology and Paleontology of such an extensive area as the 
colony of Queensland must needs involve a great amount of arduous 
work, and when this has to be accomplished in the intervals of 
ordinary survey work, there is reasonable excuse for the delay 
which has taken place in bringing out this volume. As regards the 
geological portion, the delay has been advantageous in permitting 
the results of the latest surveys to be incorporated in it, but some of 
the paleontological investigations have been already anticipated by 
other authors. In Queensland, as in new countries generally, the 
portions first examined are those which promise to yield economic 
minerals, and hence the survey has been carried on in numerous 
isolated areas, and the geological boundaries of the intervening 
portions have been determined from the best information available. 
It will therefore be readily understood that the lines on the map, 
now published on the scale of 16 miles to an inch, will probably 
require modification when a more complete survey has been carried 
out. For the earlier geological work in Queensland we are indebted 
to the late Rev. W. B. Clarke, Mr. S. Stutchbury, Mr. Aplin, Mr. A. 
C. Gregory, and more especially to the late Mr. Richard Daintree. 
Since 1877, when Mr. Jack commenced his work in the colony, the 
survey has issued no fewer than 88 reports, most of which relate to 
mining areas. ° 
