HY EZNA SPELAA. 145 
before I visited Kirkdale, had convinced me of the exist- 
ence of the den, viz., a partial polish, and wearing away 
to a considerable depth of one side only ; many straight 
fragments of the larger bones have one entire side, or the 
fractured edges of one side, rubbed down and worn com- 
pletely smooth, whilst the opposite side and ends of the 
same bones are sharp and untouched, in the same manner 
as the upper portions of pitching stones in the street be- 
come rounded and polished, whilst their lower parts retain 
the exact form and angles which they possessed when 
first laid down. This can only be explained by referring 
the partial destruction of the solid bone to friction from the 
continual treading of the Hyzenas, and rubbing of their skin 
on the side that lay uppermost in the bottom of the den.” 
In the adjoming cut, 
(fig. 56,) of the sec- 
tion of the Kirkdale = * 
Fig. 56. 
cave, before the mud = —7 / 
had been disturbed, a 1 (Wife i 
is a stratum of mud, (\ i 
4 fect 
covering the floor of 
the cave to the depth Meet ae n. 
LB Re tes, = 
Sa ee Ads 
stalagmite, imcerusting a ; 
some of the bones, and Section of Kirkdale cave, from the 
“ Reliquize Diluviane.” 
of one foot, and con- 
cealing the bones; .B, 
Se fe ecatare 
formed before the mud 
was introduced; c c, stalagmite formed since the intro- 
duction of the mud, aud spreading horizontally over its 
surface ; p, msulated stalagmite on the surface of the mud ; 
rb, stalactites hanging from the roof above the stalagmites. 
Dr. Buckland justly inferred, from the facts which his 
persevering researches elicited, and particularly from the 
L 
