BOXE CAVERNS IN EXGLAXD. 



179 



upon seeing a Spaniard on horseback, actually supposed 

 that the man and horse were but one animal. At the 

 present time, herds of wild horses, the descendants of those 

 introduced by the Spaniards, are distributed over the vast 

 plains of South America. " It is a marvellous event in the 

 history of animals," observes Mr. Darwin, " that a native 

 kind should have disappeared, and be succeeded in after 

 ages by countless herds introduced by the agency of man." * 

 39. Bone caverns in England. — In England, caves 

 and fissures containing bones of bears, wolves, and other 

 carnivora, in every respect analogous to those of Germany 



.- 6Xr 



4 feet. 



Lign. 29. — Section of the entrance to Kikkdale cave. 



(From Dr. Buckland's Reliq. Diluv.) 



A. Mud covering the floor of the cave to the depth of one foot, and concealing the 



bones. 



B. Stalagmite containing bones, formed before the mud was introduced. 

 C C. Stalagmite formed over the mud. 



D. Insulated stalagmite on the surface of the mud. 



E. E. Stalactites dependent from the roof. 



above described, have been discovered and explored. The 

 Dean of Westminster, in his beautiful work, the JRellquim 

 Diluviance, has noticed several of the most important 



* Voyage of the Adventure and Beagle. 

 n2 



