32 
pieces. — See Nos. 24 and 27, Case D 17, from Tumiac, and Nos. 5 
and I r, Case D 16, from Mont Saint-Michel. 
Nos. 24 to 32 are casts of hatchets, &c., from the dolmen of 
Tmniac (Arzon). 
D 18. 
In this Case is exhibited a series of the large nucle'i found 
near Pressigny le Grand (Indre et Loire), known from their form 
by the local name of livres-de-heurre. It is now generally held 
that the region around Pressigny was the site of an ancient 
and extensive manufactory of flint implements, which appear to 
have formed an object of barter or traffic, for implements made 
from the peculiar flint of Pressigny occur at distant places. 
The nuclei" from Pressigny have had a number of lateral chips 
removed, as seen in Nos. i to 5. This was done in order to govern 
the form of the long flakes, to be subsequently struck off, and 
which were intended for daggers, lance-heads, &c. 
D .5. 
As a temporary arrangement, the upper part of Case D 1 5 has 
been filled with specimens from widely-scattered localities, and 
from which but few examples exist in the collection. 
Africa. 
Upon tablets 22 to 27, and 34 to 36, are shown some human- 
worked flakes of quartzite from the neighbourhood of the Cape 
of Good Hope. 
East Indies. 
Upon tablets 28 to 30 are cores and flakes of agate, jasper, &c., 
from Jubbulpore, Central India, presented by Sir Charles Lyell, 
Bart. These specimens with many others were found by the late 
Lieut. Swiney. The materials used have been obtained from the 
local trap formation ; the cores and flakes occur in abundance 
along the edge of the trap country ; they are chiefly met with 
on gentle rises, but rarely found scattered over alluvial plains. 
Upon tablet 3 1 are two cores from the Indus valley, Scinde. 
These are said to have been found four feet beneath the surface of 
the bed of the river Indus, in a deposit of gravel about two feet 
thick ; the material probably partakes of the nature of a quartzite 
rather than that of a true flint. They were presented to the 
collection by the Bedfordshire Archaeological Society, to whom 
several specimens had been given by Captain John Le Mesurier, 
the finder of them. 
Arabia. 
Upon tablet 39 are flakes found at the ancient turquoise mines 
