UNCOMMON TYPE OF STONE IMPLEMENT. 
museums. It is unlikely that these seven are merely strays 
introduced from some unknown outside source. They are 
sufficiently varied in size and material to make this improbable, 
and moreover the material in each case is such as might well 
have come from the area in which the implement was found. 
The most probable explanation of their distribution is that they 
are an early type which has been superseded or discarded. 
That at least four of them are of considerable age is indicated 
by the fact that they are heavily patinated. It is, perhaps, 
significant also that in both cases where the details are known 
the implements were found not on the surface but below ground 
level. 
If they are indeed an early type, these implements con- 
stitute one of the very few fragments so far discovered of 
material evidence of the early cultural history of the Australian 
aboriginal. 
1. From Myponga, South Australia, 38 m. S. of Adelaide. 
Fig. 1, Plates IX and X. 
Fine grained massive schist or micaceous sandstone, con- 
siderably patinated all over. The marks of hammer-dressing 
are visible over most of the surface. In section the edge is 
very obtuse and, except at one extremity, is only roughly 
formed. Found by Mr. Alex. Cameron, about 1892, when 
digging a post hole. 
Weight, 14 lbs. Length, 14.4 inches. 
South Australian Museum, No. A. 4552. 
2. From Emu Lake, Kinchega Station, A. 5. IF. 6 m. S.W. of 
Menindee. Fig 2, Plates IX and X. 
Moderately fine grained, greenish grey, indurated siliceous 
sandstone or quartzite. The surface is slightly worn but there 
is no perceptible alteration by weathering. The whole surface 
retains marks of hammer-dressing and has not been ground. 
The implement is well shaped and symmetrical except that one 
face is slightly concave and the other convex. There is a slight 
but distinct constriction round the implement where the narrow 
projection merges into the expanded portion. 
Weight, 4 lb. 12 oz. Length, 9.6 inches. 
South Australian Museum, No. A4551. 
Numbers 1 and 2 are described here through the courtesy 
of the Director of the South Australian Museum, who has been 
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