8 
can get copper or iron, but when they are unable to do so, they 
employ tools of flint or hornstone. 
Now the flint-implements of the drift are admirably fitted for use 
as ice-chisels, what more probable than that the too] should slip 
from the benumbed hands of the workman, of course never to be 
recovered by him. 
Following out this theory, tribes of these hunters and fishers of 
the drift would probably select favourite spots in the estuaries and 
rivers of the period in which to make their ice-holes; to these they 
would have resorted year after year, affording a possible clue to 
the local distribution of the flint implements, which appear to be 
abundant at certain localities, and entirely absent in others of pre¬ 
cisely similar geological character. If the ice-hole theory be 
adopted, it ceases to astonish us that human remains are absent in 
drift deposits—the ice-chisel might slip through the hole, but there 
would be little chance of the fisherman doing the same. 
A few mammalian remains from the drift of various localities are 
exhibited in this case, merely to illustrate the flint implements. 
The visitor is referred to Cases M, N, and O for a more complete 
and extensive series of these objects. 
41. Upper molar of Mammoth (Elephas primigenius), found in the 
drift at Burcombe, in 1863. 
42. Fragment of tusk of Mammoth (E. primigenius), from the drift 
near Gravesend. 
43 and 44. Lower molars of Rhinoceros tichorhinus, from the drift 
of Fisherton Anger, near Salisbury. 
45. Specimen of shell band in the drift exposed by the Railway 
cutting at Milford, near Salisbury. 
46. Specimen of the drift in Harnham valley, sand with rolled 
chalk. 
Nos. 41 to 46 are deposited by Mr. E. T. Stevens. 
CASE Q. 
All deposited by Dr. H. P. Blackmore , except stated to the 
contrary. 
1 and 2. Forgeries of flint implements (drift type) made and sold 
by the workmen at Porte Marcade, Abbeville, deposited by 
Mr. E. T. Stevens. 
Keeping (of the Isle of Wight), a well-known geologist,^ has 
been employed by Messrs. Evans, Prestwich, and others, to dig in 
the pits at Moulin Quignon, and he has established beyond a doubt 
the fact that the workmen bury their forgeries in the gravel (a 
dark, sandy gravel, called the black seam , the colour of which is 
derived from an admixture of oxide of iron and manganese), in 
order the more completely to deceive collectors, who would thus 
be under the idea that they themselves found the implements in 
situ. All the seven specimens dug out by Keeping himself are 
