156 The Pygmy Flint Age in Lincolnshive. 
flint, often only half an inch long, made into various shapes, and 
for convenience sake they have been classified as :—— 
Crescent Shaped 
Triangular or Scalene 
Arrow Head 
Rounded and Pointed 
Chisel Shaped 
Trapezoid or Rhomboidal 
Flint Flakes like knives with serrated chipped 
edges at the back. 
They are beautifully made and show extraordinary keen 
sight in those who made them—frequently one side only shows 
secondary working, and the chipping is so finely done that often 
twenty and thirty different chips have been made on a fine thin 
‘edge of flint in the length of half an inch. 
The question has been asked, how may we know Pygmy 
Flints are the work of mankind? Practically by the same 
method that we know other Flint or Stone Implements are 
the handiwork of man—Examine these Pygmy Flints iiss and 
you will be able to trace 
1 The Bulb of percussion showing where the blow was 
struck to separate the flake from the Flint Nodule. 
iS) 
The Choncoidal Fracture running down the length of 
the flint. 
3. The Dorsal ridges on the back of the Flint. 
4 The secondary working along one edge. 
5 The Patina or skin, the result of weathering or exposure. 
These distinct characteristics prove these flints are no hap- 
hazard flakings from a flint core. 
When you can pick up these Pygmy Flints and show all these 
peculiarities you are able to convince reasonable men that they 
are the work of a race of people, who, with keen vision and clever 
handiwork, were able to make tools which have outlived their 
own age and race by many thousands of years. 
