OF THE ARROW-HEADED CHARACTER. 497 
possible to tell that the brickmaker impressed 
the character B, after forming A and C. This 
is most clearly proved by a little flap of clay, 
which is seen hanging over into A at D—a result 
due alone to its having been impressed last of all. 
This simple, but interestingly beautiful detail, 
tends in a striking manner to illustrate the im- 
portance of minute practical observation in such 
investigations; it even conveys to us the know- 
ledge of the exact state of moisture in which the 
clay was when so impressed, as before said, 
upwards of 4,000 years ago! 
