120 INNER PARTS OF BAUMANS HOHLE. 
where the rock f would form an impediment to their further 
progress; many bones that lay in the great cave b would pass for¬ 
ward with these pebbles into e, and others may have already been 
laid there; in either case, a rapid movement of the large pebbles 
must have been necessary to crush to pieces the large and strong 
bones, whose sharp and angular splinters now adhere to them. 
Their state again is totally different from that of the splinters in the 
den at Kirkdale, which latter are as obviously the effect of fracture 
by the hyaenas’ teeth, as the former are of a violently crushing blow, 
imparted by a heavy mass of stone. These splinters, as well as the 
less injured bones that lie among the pebbles, are held together by 
stalagmite, by which they adhere to, and form with the pebbles 
a strong breccia; their preservation from decay is complete, and 
their colour that of natural bone, or light cream colour. 
Within the vault e, the rock f rises almost suddenly about 20 
feet, and must be crossed by ladders; on the further side of it, we 
descend again a considerable distance by a lofty and rugged aperture g, 
to the lower cavern h, from the roof and sides of which there ascend 
other passages resembling k, which I did not explore, but of 
which, and indeed of the whole cavern, a ground plan is given by 
Leibnitz, in his Protogasa, Plate I. By some of these passages, the 
pebbles may have come in which we find below, in the cavern h. 
This cavern has, from its position in the inmost recesses, and its 
diffi culty of access, been not much disturbed, and has several off¬ 
shoots, the contents of which are still glazed over with a crust of 
virgin stalagmite : in others, the stalagmite has been broken through 
as at i; and artificial vaults, like those at Scharzfeld, have been dug 
