BY R. ETHERIDGE, JUN. 359 



sharp cutting edge, the bevel smoothed off and polished. The 

 cutting edge is sharp, and fairly equal in its curvature. 



The following are the measurements of this tomahawk: — 

 Length, 5£in.; breadth, 2|in. ; thickness, If in. ; weight, lib. loz. 



Similar to Mr. Lowe's tomahawk are two from Braidwood, New 

 South Wales, for which I am indebted to Mr. J. W. Penney, of 

 Braidwood, forwarded through Mr. C. Roberts, J. P., of Boro. 

 Both, originally pebbles, have been reduced in bulk by chipping, 

 one much more so than the other. The least chipped (PI. xxix., 

 figs. 1 and 2) is composed of very hard greenish diorite, probably 

 containing a little free quartz, and has been thinned-off at both 

 ends, leaving the centre the thickest part. The anterior end has 

 been sufficiently ground to produce a sharp and very symmetrical 

 cutting edge, and a flat bevel. This implement measures : — 

 Length, 5^in.; breadth, 2fin.; thickness, lfin. ; weight, 14oz. 



The amount of chipping is not great, the working being 

 confined to a few large facets near the butt. The second 

 Braidwood specimen, on the other hand, is highly facetted by 

 chipping, the rock of which it is composed, a greenish-black 

 dioritic aphanite, lending itself to the process admirably, with a 

 strongly marked conchoidal fracture. The cutting edge is 

 remarkably true, and like the bevel, well executed, with the 

 polished surface, which is exceedingly smooth and glossy, continued 

 backwards for quite half the length of the implement ; the gently 

 convex surface is quite equal on both sides. The measurements 

 are:— Length, 4|in. ; breadth, 2Jin. ; thickness, lfin.; weight, 

 13oz. 



Another illustration of this group is the well executed toma- 

 hawk already described in our "Proceedings,"* from Brisbane 

 Water, near Gosford, composed of a dense, greenish-black, f rag- 

 mental, basic rock, forming a very compact and neat implement. 



The next specimen of this type is from Sir. W. Macleay's 

 Collection, and although larger, is not so truly or excellently made. 



* Proc. Linn. Soc. N. S. Wales, 1S90, v. (2), Pt. 2, p. 292. 



