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is about twenty feet ; and occasioned to M. Esper and his companions 
some little fear lest they should never return, but remain to augment 
the zoolithes contained in these terrific mansions. This cavern was 
found to be about thirty feet in height, about fifteen feet in width, and 
nearly circular : the sides, roof, and floor, displaying the remains of 
animals. The rock itself is thickly beset with teeth and bones, and 
the floor is covered with a loose earth, the evident result of animal 
decomposition, and in which numerous bones are imbedded. 
A gradual descent leads to another grotto, which, with its passage, 
is forty feet in length, and twenty feet in height. Its sides and top 
are beautifully adorned with stalactites. Nearly twenty feet further 
is a frightful gulf, the opening of which is about fifteen feet in diame- 
ter ; and upon descending about twenty feet, another grotto, about 
the same diameter with the former, but forty feet in height, is seen. 
Here the bones are dispersed about ; and the floor, which is formed of 
animal earth, has great numbers of them imbedded in it. The bones 
which are here found seem to be of different animals ; but in this, as 
well as in the former caverns, perfect and unbroken bones are very sel- 
dom found. Sometimes a tooth is seen projecting from the solid rock, 
through the stalactitic covering, showing that many of these wonderfnl 
remains may here be concealed. A specimen of this kind, which I 
possess, from Gaylenreuth, is rendered particularly interesting, by the 
first molar tooth of the lower jaw, with its enamel quite perfect, rising 
through the stalactitic mass which invests the bone. In this cavern the 
stalactites begin to be of a larger size, and of a more columnar form. 
Passing on, through a small opening in the rock, a small cave, seven 
feet long and five feet high, is discovered : another small opening out 
of which leads to another small cave ; from which a sloping descent 
leads to a cave twenty-five feet in height, and above half as much in 
its diameter, in which is a truncated columnar stalactite, eight feet 
in circumference. 
A narrow and most difficult passage, twenty feet in length, leads 
