60 The Origin and Antiquity of Man. [Jan., 
short duration compared with that of other families of mammalia. 
The opinion contained in the last sentence quoted is identical with 
that expressed by Dr. Falconer, but it reveals more clealy the idea 
on which it is founded. At present man stands alone and quite 
isolated in the animal kingdom, and the certain records of his 
existence are as yet confined to Post-pliocene, probably to Post- 
glacial, deposits. We ought, nevertheless, to be prepared to receive 
facts which will extend his range in time, and lessen the gap 
between him and his “nearest relatives.” Let us mention as 
two shadows, such as coming events cast before them, first, the 
discovery of markings on the bones of Hlephas meridionalis, an 
animal of Pliocene age, supposed by M. Desnoyers and other 
naturalists to be of human production; and secondly, the discovery 
of a remarkable tooth, associated with remains of Diprotodon, &c., 
by Mr. Gerard Krefft, in an Australian cavern, which that 
gentleman describes as follows:*—‘“ In shape it resembles the first 
of the premolar series of the lower jaw in man: the root, however, 
is much longer, the crown smaller, protruding, and considerably 
worn ; the root is not smooth as in man, but somewhat ridged, with 
a few tubercles on the upper part.” Mr. Krefft may well say, 
“T have no conjecture to offer as to which genus this tooth is 
referable.” 
EXPLANATION OF THE PLATE. 
Fia. 1. Quartzite Implement from the Atrumpakkam nullah, one-half the natural 
size. (After Foote.) 
. Flint Implement from Icklingham, one-third the natural size. 
? Quartzite Implement from the Atrumpakkam nullah, one-half the natural 
size. (After Foote.) 
. Flint Implement from Milancourt, one-third the natural size. 
. Quartzite Implement from the Atrumpakkam nullah, unusually well made, 
one-half the natural size. (After Foote.) 
. Flint Implement from Abbeville, one-half the natural size. 
. Quartzite Siing Stone, from the Atrumpakkam nullah, one-half the natural 
size. (After Foote.) 
. Flint Sling Stone, from an Abbeville Tourbitre, one-half the natural size. 
Oo ND oP Wh 
* «Geological Magazine,’ December, 1865. 
