334 OPENING OF AN ANCIENT BARROW 
It was thought, that these insects belonged to an 
extinct species, which had its existence, when the 
temperature of the earth was higher, than it is at 
present. But, Mr. Westwood, of Hammersmith, 
an eminent entomologist, says, that these beetles 
are of the species Cossonas, and are of a genus of 
Wood-boring beetles; and, that the species is not 
extinct; and, that he has specimens of the same 
kind, both from Greece and Egypt. 
TRENCH. 
This plate of animal matter, seemed to have 
been placed on the level of the original green 
sward. And, on the surface of this animal matter, 
was a covering of loose earth, about two inches 
in thickness, which seemed to have fallen from the 
roof, and sides of the chamber. Immediately be- 
low this plate of animal matter, a trench had been 
cut, about fifteen inches in depth; and two tiers 
of round oak timber had been placed in this trench. 
The first tier was notched into the green sward; 
and the second tier was nine inches below it. The 
horizontal distance of the several pieces, was about 
eighteen inches; and, the pieces, in the lower 
tier, were placed exactly opposite to those in the 
upper one. Several of the pieces were charred ; 
and, many of them had entirely disappeared, leav- 
