] 04 Spencer and Walcoft : 



origin could be duplicated by pressing different parts of the 

 cutting edges of the teeth lightly on the clay. The chisel-like 

 incisions, shown particularly in Fig. 2, Plate XXXVI., have their 

 abrupt terminal ends very slightly bifurcated, and this feature 

 wks remarkably imitated — more prominently on account of the 

 medium used — by the edge of the upper tooth, just where the 

 anterior end commences its terminal curve. 



If the great premolar were biting on a flat surface only two 

 indentations would be made, one corresponding to each of the 

 raised ends of the cutting ridges, but, on the curved surface 

 of the bone in question, the whole, or at least the greater part, 

 of the cutting ridge came into play, with the result that the 

 surface of the bone is marked by long curved incisions. 



Mention may be made of the scalloping very inadequately shown 

 on Fig. 8, Plate XXX VI., and Figs. 1, 19, Plate XXXVIL, to 

 which reference has already been made in regard to Fig. 19, Plate 

 XXXVIL On one corner of Fig. 1, Plate XXXVIL, there 

 are three tiers or steps of scallops made by cuts similar in form 

 to the slight incisions on the surface of this and other bones — 

 (indeed one of the chisel-like incisions is present on one of the 

 steps) — but cutting more deeply into the bone substance. In 

 other words, we have a series of cuts all of similar fonn, the 

 slightest resulting in mere surface markings, others in more 

 or less deep scalloping, and others, finally, in complete cuts 

 through the bone. 



Before passing on to make some general remarks, we may 

 draw attention to one or two other specimens. The deeper straight 

 impressions or gashes as seen in Figs. 10, 11, Plate XXX VL, 

 although comparatively few in number on the Pejark specimens, 

 are common on those from elsewhere to which we shall have 

 occasion to refer later. In both specimens such gashes have 

 apparently been the means of fracturing the bones at oblique angles 



These cuts may be compared with those figured by De Vis 

 (4), to one or two of which they are closely comparable. They 

 are attributed by that author to the agency of Thylacoleo. 



Some fragments show clear evidence of having been chewed 

 after having, apparently, been broken off the main bone. Li Fig. 

 17, Plate XXXVL, this is evident in the general rounding of the 

 fragment and the consequent removal of about half of the external 



