24 
THE GEOLOGIST. 
■Ri., IS is another and very remarkable flint-mstrument, probably a lance- or 
Fig. IS is another ana javelin-head, from the superficial gravel 
above the London Clay, at Hornsey, m 
Middlesex, and now in the collection of 
Mr. N. T. Wetherell, of Highgate, to 
whom it was brought a short time since 
by one of the quarrymen as a fossil fish; 
ri;r. i8.-Fiint Javelin or Spear-head r?;, the workman mistaking the white chalky 
&l?a4?atHo-e&''^^^^^^ 'VOt^t one end for the eye, and the nn- 
merous fine chippmgs for scales, it is 
about six inches long by two inches broad, and but little more than a quarter of 
an iuch in its central thickest part. 
In Mr Mackie's Diagram No. A' I. there is figured from the collection ot 
the Society of Antiquaries (fig. 12 of diagram) a very long, narrow, and re- 
markable flint-instrument, apparently either a lance-head or a dagger, although 
it may have been used for the more pacific purposes of a knife. From its 
general appearance one would suspect it to have come from some sandy or 
gravelly deposit, and to be of veritable geological age; but there is no entry in 
the Society's catalogue of either the time or 
place of its discovery, and it may after all be 
only of Celtic date. We give also another 
worked instrument fig. 20 (fig. 1 9 of diagram) 
contained in the same collection, but of which 
also no record of the circumstances of dis- 
covery are preserved. It may be a gravel 
specimen. 
We now tui'n to another class of fossil implements, formed of mere flakes of 
flints, which are more likely to escape detection than the larger instruments we 
have been describing, not only from their smaller size, but also from their 
L'ability to breakage, and the consequent resemblance of their broken pieces to 
mere natural chippings and fragments of flints. The flake -instruments are 
Fig. 20.— Flint Saw ? (British). In 
file Collection of the Society of Anti- 
quaries of London. Size: 6 inches 
by I j inches. 
Fig. 21.— Fhnt-flake Knife from the Turbary of the Somme, at Abbeville. Natural size. 
well known from Celtic graves, and are commonly met with amongst the relics 
of all savage tribes, in the form of arrow-heads, knives, dart- and javelin-points, 
and saws ; and flake-knives and flake arrow-heads have also been met with in 
ossiferous cave-, and gravel-deposits, and as well as in peat-bogs, turbaries, and 
