196 Proceedings of the Royal Society of Victoria. 



The class C. B. I. /'. 3., deltoid, is the same as that of Mr. 

 Etheridge. The type examples of this class come from N.W. 

 Australia, examples from other parts being apparently acci- 

 dental, and due, probably, to shape of the pebble used. 



Class C. B. I. /?. 4., gad-shaped, is very distinct ; it is divided 

 into two sub-classes, a. cylindrical, and /3. flattened body. 



The examples of sub-class a. are all, as far as known, from the 

 Goulburn Valley, Victoi'ia ; the sub-class /3. occur numerously in 

 Gippsland, New South Wales and Queensland. 



Class C. B. I. /'. 5., adze-shaped, would appear to be doubtful,, 

 were it not for the very distinct specimens illustrated by Mr, 

 Etheridge, and for one example in the National Museum, 

 Melbourne. They resemble strongly South Sea implements, and 

 show more specialization than any others described. 



Class C. B. I. d. 6., cone-shaped, is very definite, the only 

 examples known to the writers coming from the Goulburn 

 Valley, Victoria. 



Subdivision C. B. 2., wedges, comprises implements of axe- 

 shape, and of large size. They are generally of inferior stone, and 

 do not have well polished cutting edges. Almost all the examples 

 known are grooved for hafts or holding-withies. The different 

 styles of grooving cause them to be divided into four sections : — 

 a. With a single transverse groove (the common type) ; d. double 

 transverse groove (rare) ; c. with a longitudinal groove extending 

 from the transverse groove around the butt, evidently intended 

 for firmer attachment of the haft ; and d. without a groove. 



Subdivision C. B. III., knives or scrapers, comprises the small 

 axe-shaped implements, often called " toy tomahawks." Their 

 use is for carving and particulai'ly for scraping and dressing skins 

 for rugs. Although they have distinctive variations in shape and 

 method of preparation, they do not occur in sufficient number 

 to warrant further suVjdivision. 



The second group, grinding implements, distinguished l)y Gp., 

 is separated into two divisions. A. Kerns or mills, for grinding 

 foodstuffs and pigments, and B. Grinding stones, for fashioning 

 and sharpening other implements. 



The division Gp. A. forms six subdivisions: — I. Nether stones 

 with husking hole on the lower .side, and a spherical hollow ; IL 

 Nether stones without the liusking hole, and with a sjoherical 



