28 Annals of the SoutJi African Masemn. 



detaching hammers had been deposited by gravitation, so as to form 

 here and there irregular circles. The one shown in Fig. 75 of PI. XL 

 is only of moderate size ; some of those met with were more than 

 twice as large. Were it not that the edges are so abraded, it might 

 be possible to imagine that these stones had been cores as already 

 stated, or perhaps missiles, in spite, or may be on account, of their 

 weight, but together with these artefacts we found the fragment 

 represented in PI. XI., Fig. 84. Made of the same crystalline 

 quartzite as the detaching hammers, a quartzite not found vi situ, 

 it shows plainly that it was detached from a rock surface by a very 

 large tool of the style of those mentioned as detaching hammer. 

 The reverse is fiat and the fracture clean. The obverse is already 

 pared on the upper side by the repeated blows of the detaching tools, 

 somewhat in the manner claimed for the Mousterian of Europe. 



On the Cape Flats, in the neiglibourhood of Cape Town, there used 

 to be exposed here and there outcrops of a close-grained cherty 

 sandstone, or surface quartzite, and the grains of which, even when 

 not closely set, are cemented together by silicious matter. Some of 

 these outcrops were covered with large bosses and depressions due 

 to the removal of large or moderate-sized fragments by percussion. 

 Fragments of the same rock considerably too large for paring or 

 trimming the somewhat delicate, small-sized tools found there in 

 abundance were not uncommon in the neighbourhood of these out- 

 crops, and they may also be considered as detaching hammers, but 

 none of these seen by me was equal in size to those found at 

 Fishhook. That the detaching hammers, possibly hurling stones 

 as well, made of this surface quartzite were also used as cores 

 seems to be proven by the find, also at Fishhook, of similar examples, 

 together with large flaking tools, of the same material, one of 

 which is figured in Plate XI., Fig. 90. 



But as will be seen later on, the implements made of such material 

 are comparatively recent. 



