296 AUSTRALIAN ABORIGINAL STONE WEAPONS AND IMPLEMENTS, 



somewhat flattened on the other, especially towards the anterior. 

 The cutting edge is much more regularly curved than in the 

 generality of tomahawks, but the bevelled sides are unequal in 

 consequence of the almost plano-convex section of the pebble from 

 which the implement has been adapted. The hafting groove is 

 wide, and rather less than two-eighths of an inch deep ; it has 

 been very regularly and equally prepared. The general surface 

 exhibits a roughened more or less areolate structure, probably the 

 result of weathering, the immediate cutting-edge being the only 

 smoothed part. The latter is slightly chipped, and the surface 

 of the hammer-headed butt indented or bruised. The longest 

 diameter of the head is two and three-eighths inches, and the 

 shortest one and four-eighths inches. The tomahawk is four and 

 five-eighths inches long and three inches wide. Its weight is one 

 pound three ounces. In colour it is brownish-black. Impossible 

 as it is to spoil the implement by the preparation of a microscopic 

 section, its petrological identity can only be surmised from macro- 

 scopic examination. The rock is regarded by Mr. G. W. Card as 

 a finely crystalline igneous rock, possibly a diorite or diabase. 

 Like the grooved tomahawk figured by the late Mr. McPherson, 

 our specimen differs from the North Queensland example in the 

 much more posterior position of the hafting groove, and thereby 

 approximates to the implement figured by Smyth from a Mirrn- 

 yong at Lake Condah, Victoria, but the butt end in the present 

 one is much flatter. 



A very heavy grooved implement from Cape Hawke, N. S. 

 Wales, is in the Australian Museum, presented by Mr. Hugh 

 Breckenridge, and is again converted from a large pebble, also a 

 finely crystalline igneous rock, probably a diabase, says Mr. Card. 

 It is much heavier than either of the previous examples that 

 have come under my notice, weighing three pounds. The hafting 

 groove is not nearly so posterior in position as in that just 

 described, or in the Queensland Museum specimen. It is also 

 shallower and wider. The bevel has been produced, as usual, by 

 grinding the surface rather more on one face than the other. 

 The cutting-edge is well curved, and was before injury approach- 



