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SCIENCE AND INDUSTRY. 
2. A descriptive catalogue of the osteological specimens relating to Homo 
Tasmaniensis, contained in the Tasmanian Museum, by W. Lodewyk 
Crowther, D.S.O., M.B., and Clive Lord. 
For their introductory remarks the authors state that during the course 
of the preparation of a paper dealing with certain recent valuable additions to 
the Tasmanian Museum, it became necessary to revise the complete collection 
of the osteological specimens relating to the Tasmanian aboriginals. 
The present list forms a record of the largest single collection of osteo- 
logical remains of the extinct Tasmanian aboriginals. It embraces also, speci- © 
mens concerning which data is being gathered for publication. Again, in the- 
course of the work, additional particulars have been added to specimens already 
described in part. With the exception of the researches of Harper and Clarke, 
and, later, of Berry and Robertson, on certain of the crania included in this 
-list, none of the specimens have previously been described. 
_The main portion of the paper deals with 361 osteological specimens relat-— 
ing to the Tasmanian aboriginals—each bone being described. 
ROYAL SOCIETY OF VICTORIA. 
At the August meeting the following papers were read:— 
1. Organization of Science in Australia, by Professor T. H. Laby, M.A. 
2. Note on the “Dimpling ” of Granite Hills in Sub-Arid Australia, by J. T. 
Jutson. 
Low scattered isolated hills of granite, practically bare of vegetation, 
occur in.sub-arid Western Australia. They have the rounded outline and the 
boulders due to spheroidal weathering, but, in addition, some have a distinctly 
dimpled appearance, due to the occurrence upon the sides of the hills of rock 
holes of various shapes and sizes. These holes or “dimples ” may be scattered, 
or may be arranged along definite lines (e.g., a drainage furrow in the hillside). 
The “dimples” are a variety of the normal rock’ or “ gnamma” holes common 
in granite areas in inland Western Australia. The various views as to the 
latter, i.e., differential erosion, solution, and effect of joints, are briefly stated, 
and held to apply, to some extent, at least, to the formation of the “ dimples,” 
except that the effect of jointing has not been noticed, and also that the 
mechanical action of water, where the dimples are in a furrow of erosion, must, 
to some extent, be responsible when the holes overflow after heavy rain, and 
the water passes from one hole to another by a series of low waterfalls. 
_ 3. An example of Gravitational Drift of Rock Débris in Parallel Lines in 
Sub-Arid Western Australia, by T. J. T. Jutson. . : 
Gravitational Drift of Rock Débris in General—A widespread surface 
covering of rock fragments is one of the commonest features in sub-arid Western 
Australia. It is due to the slow gravitational drift of the fragments, and to 
the removal of the fine material by rain and wind. Only the hardest rocks 
travel any distance. As a general rule there is no particular arrangement of 
the rock fragments, but an exception to this is the subject of the paper, 
Gravitational Drift of Rock Débris in Parallel Lines—Che example occurs 
on the floor of Lake Goongarrie on the eastern side of a quartz reef, which runs 
parallel to the strike, which is N.10°W. of the enclosing indurated black shales. 
The shale floor is gently inclined to the east from. the reef, and the débris from 
the reef is travelling in parallel lines down this slope. There are alternate bands 
of this quartz débris, and of practically bare black shales. It is Suggested that 
the shales are being differentially eroded by ordinary weathering alone their 
line of strike, and that the wind sweeps the material away, forming a furrow, 
and at the same time undermines the quartz fragments, which then topple for- 
ward into the furrow. The “ridge,” lately oceupied by the quartz, then becomes 
furrowed, and then again becomes oecupied by quartz fragments. Thus the 
parallelism is maintained. As rain must flow across the furrows, it cannot be 
responsible for the latter. One objection to the suggested explanation is the 
difficulty of understanding how the parallelism can be maintained even under 
the special conditions postulated. The matter is brought forward so that further 
instances may be found and studied. So far as known to the writer, there is 
no similar record. 
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