MONODON MONOCEROS. 



523 



In the Hunterian Collection of Fossils in the Royal 

 College of Surgeons, there is a small fragment of the tusk 

 of a Narwhal, No. 1439, partly decomposed and absorbent 

 from the loss of animal matter, which is stated to be 

 "from Baumann's Cave." This cave is situated on the 

 north-east border of the Hartz, in Blankenburg, and is 

 described by Leibnitz in his ' Protogsea. 1 ^ 



* See my catalogue of the Fossil Mammalia and Aves in the Museum of the 

 ' Royal College of Surgeons of England, 4to., p. 286. 



Fig. 216. 



Base of skull of thick- toothed Grampus. Fen, Lincolnshire. 



