

15^ 



RELICS OF PRIMEVAL LIFE 



Pierre, the attempt was made to secure the most 

 massive blocks possible, in order to provide large 

 slabs for showy museum specimens. More recently, 

 when collections have been made k{m\ the eroded 

 and crumbling- surfaces of the limestone in its wider 



Fig. 33. — WcalhcrCii ski jure of EorAhm. 

 Showing section^ of two funnels or tubes with limiting walls, Cflte St. Pievre. 



exposures, it was found that specimens of moderate 

 size had been weathered out, and could, either 

 naturally or by treatment with acid, be entirely 

 separated from the matrix. Such specimens some- 

 times showed, either on the surfaces or on the sides 



