10 
specimens nearly circular, very thick in the centre, and 
brought to an edge all round ; they differ in form and in 
workmanship from the oval implements. They may have 
been used as missiles. 
6. Oval implements — having a sharp edge all round, and in 
section thickening towards the middle. 
7. Heart-shaped implements — in typical examples having a 
sharp edge all round, but in some cases presenting in 
section a thickening towards the broad end rather than 
towards the middle. If any of the drift implements were 
employed as spear-heads, it is probable that these heart- 
shaped implements were so used. 
A 7, 8, B 10, AND D 10. 
The flint implements in these Cases are from the valley-gravels 
(drift) of France, chiefly from St. Acheul and Abbeville, in the 
valley of the Somme, and from Vaudricourt (Pas-de-Calais). 
A 7. 
Nos. 8 and 9 are simple flakes, showing the bulb of percussion 
upon the under surface. The remainder of the specimens are 
implements of the pear-shaped class, having a bulbous termination 
at one end, and a point at the other. No. i may be instanced as 
a rude example of this type, and No. 6 as a well-finished speci- 
men of it. No. 12 may have been used as a boring-tool. 
A 8. 
The specimens in this case are of the oval class, having a 
sharp edge all round ; this type, however, passes into the pear- 
shaped type by intermediate forms, so that no sharp line sepa- 
rates the two. No. 6 is a typical oval. Nos, 12, 13, and 14 are 
of the shoe-shaped type. No. 13 is a typical example. Nos. 15 
and 23 are of the heart-shaped type. No. 4, when made, must 
have been black over its entire surface; some slight idea of the 
time which has elapsed since it was chipped into form can be 
derived from observing the thickness of the white crust, the 
formation of which is due entirely to age. 
D 10 
Contains the other specimens exhibited from the drift of 
France. Nos. 10, 11, 12, 13, and 14 are from Poitou ; they are 
of drift type, although found upon the surface soil. 
B 10. 
In this Case, Nos. 10 and 11 are scrapers — implements with a 
broad back and a blunt edge, closely resembling tools in recent 
use by the Esquimaux for removing fat, &c., in preparing skins 
