CALLED CASTLE HILL. aoe 
by pressure. When the chamber was first opened, 
the candles were extinguished, and there was great 
difficulty in breathing. The sides and bottom of 
the chamber were coated with an impalpable 
powder of a smoke colour. 
ANIMAL MATTER. 
The bottom of this chamber was covered with 
a dark coloured substance, about three inches in 
thickness. The external surface of this substance 
was like peat earth, being rough and uneven, and 
of a black colour. “The inside’ of it, when broken, 
was close and compact, and somewhat similar to 
black sealing wax; and, when examined by the 
microscope, it was found to be closely dotted with 
particles of lime. And, it was thought to be a 
mixture of wood-ashes, half-burned animal mat- 
ter, and calcined bones. 
BEETLES. 
An immense number of the elytra of small bee- 
tles were found imbedded in this cake of carbonized 
animal matter. The elytra were of a light puce 
colour, about a quarter of an inchin length. They 
were striated longitudinally; and, in the channels, 
were spherical dots, which, when examined by 
the microscope, had a very beautiful appearance. 
bn 
