98 
president’s ADDRESS — SECTION C. 
that of South Australia as far north as the latitude of Adelaide, 
34° 9' S., which is only two degrees south of the latitude of Newcastle* 
in New South Wales. 
More satisfactory biological evidence on this subject is much 
needed. 
(12.) Evidence is as yet insufficient to show whether or not the 
Pliocene or Pleistocene glaciation of Australia and Tasmania was 
synchronous with the former great extension of the glaciers of New 
Zealand, and the late Tertiary or Post-Tertiary glaciation of Kerguelen 
Island and of southern South America.* 
I he temptation to indulge in theories as to the causes of the 
glaciations in the southern hemisphere, in Permo-Carboniferous and 
in Cainozoic time, are very strong; but it would perhaps be better for 
us Australian geologists to sail by these rocks of the Sirens, stopping 
our ears lest we be lured to our doom. The spirit which animated the 
founders of the Geological Society of London should move us all to 
observe more and to tbeorisc less. A fair field of research lies before 
us in Australasia, which for the magnitude of its area glaciated in 
Palaeozoic time, the clearness and intensity of this Palaeozoic glacia- 
tion, and the thickness and extent of its Palaeozoic glacial beds stands 
as yet without a rival in any part of the world. Let anyone who 
questions the accuracy of this statement follow the advice of that 
grand old geologist Desmarest, and “ Go and see”; and he will be 
made of very unsentimental stuff indeed if he does not thrill with 
enthusiasm at the sight of those stately ruins, silent yet speaking 
eloquently of a bygone time when thick blue ice invaded our southern 
shores and marched, irresistible, over our mountains. 
To summarise the work that has been done in Australia and 
Tasmania on this great ice question in such a form as to prove of some 
use, 1 trust, to future workers has been my chief end in preparing 
this address ; and most sincerely do I hope that, chilly as the subject 
is, it will never lead to a coolness springing up between any two of 
our geological workers. For my own part I have received such 
universal kindness and assistance, when preparing material for this 
address, that T feel more than ever convinced of the strength and 
permanence of that feeling of federation and brotherhood among 
Australian geologi ca 1 workers, which is the outcome oE unselfishness, 
and which gives bright promise of our winning, in the near future, 
by our united efforts, fresh victories for the great cause of Truth. 
My thanks are specially due, for much kind help rendered me 
while preparing tin's address, to the following Mr. Charles C. 
Brittlebank ; Mr. George Sweet, E.G.S. ; Professor Tate ; Mr. Walter 
Howehin, E.G.S. ; Mr. L. Birks ; Mr. A. W. Howitt, F.G.S. ; Mr. 
E. E. Pittman, Assoc. E.S.AI. ; Mr. P. Etheridge, junr. ; Air. W. S. 
Dun ; Air. Ii. L. Jack, E.G.S. ; Mr. A. G. Maitland ; Mr. C. W. de 
A is, M.A. ; Mr. T. S. Hall, M.A.; and Mr. G. B. Pritchard. 
Note. Since the above address was delivered, additional evidence of the presence 
of granite and other crystalline rocks in the Antarctic regions has been furnished by 
Mr. Borclgrevinck, of the whaler “Antarctic.” He collected, at the beginning of this 
year, at Cape Adair, in Victoria Land, specimens of rocks which I have identified as 
miecrocline granites, containing garnet and tourmaline, and mica-schists. 
7 For references to the last-mentioned, see Geology, vol. ii., Stratigrauhical, by 
Professor Prestwich, p. 4(i<>. 
