GLACIAL COMMITTEE. 191 
J.—-REPoRT BY THE SECRETARY OF THE TASMANIAN SECTION, 
W. 4H. Twervetrees, F.G.S., THe GoveRNMENT 
GEOLOGIST. 
OBSERVATIONS relating to glacial evidences in Tasmania 
have resulted in important discoveries lately. 
Among earlier records of glacial action m Tasmania are 
those of Mr. C. Gould, formerly Government Geologist of Tas 
mania; Mr. C. P. Sprent, formerly Surveyor-General; and 
Mr. R. M. Johnston, the present Government Statistician. 
Mr. R. M. Johnston, F.S.8., has given an able summary 
of our knowledge of glacial evidences in Tasmania in a 
paper read before the Royai Society of Tasmania.* He 
refers the evidences to two distinct geological horizons—(a) 
Late Cainozoic (late Tertiary or Post-Tertiary), and (8) 
Permo-Carboniferous. 
Messrs. T. B. Moore, E. J. Dunn, F.G.S., A. Montgomery, 
M.A., Graham Officer, B.Se., Lewis Balfour, B.A., and Act- 
ing-Proefessor E. G. Hogg, M.A., have ali recorded distinct 
evidences of glacial action in Tasmania. These authors 
recognise the two. distinct glacial horizons above-mentioned, 
but there is still some difference of opinion among them 
G) (a) as to how much of the glacial “deposits is Cainozoic, 
and (b) how much of them is Permo-Carboniferous material 
redistributed by fresh-water action in Cainozoic time, and 
(ii) as to how far down towards sea-level the glaciation has 
extended. Since this report was read, Mr. Howchin believes 
that he has identified glacial beds in the Lower Paleozoic 
rocks of the West Coast of Tasmania, on a horizon that is 
perhaps of Cambrian age. 
Observations’ on the glacial geology of Tasmania may, 
therefore, be convenientiy grouped under the headings of— 
(a) Cainozoic, (B) Permo-Carboniferous, and (c} Lower 
Paleozoic. 
(A). Cainozoic—Mr. T. B. Moore holds that the Tas 
manian glaciers during the later part of this era came down 
to within 150 feet of sea-level, or even (on the West Coast 
of Tasmania) to sea-level itself.+ 
Mr. A. Montgemery is of opinion that, at the head of 
the Pieman River, the glaciers came down possibly to within 
500 to 600 feet of the present sea-level.t 
*The Glacier Epoch of Australasia. Papers and Proc. Roy. 
Soc. Tasmania, 1893, pp. 73-134. 
_ + Papers and Proc. Roy. Soc. Tasmania, 1893, pp. 147-145, and 
vbid, 1894-95, Augt., 1896, pp. 73-77. “ 
t Papers and Proc. Roy. Soc. Tasmania, 1893 [issued 1394}, 
p. , 
