Notes and Comments. 



a life-size restoration of a jaw of Ptychodus decurrens, based on 

 the Glynde specimens, which clearly indicates the relative 

 positions of teeth and jaw. As to the precise zoological position 

 occupied by Ptychodus, as indicated by the recent discovery, 

 reference should be made to Dr. Woodward's paper. 



PRE-HISTORIC POTTERY. 



We recently fig-ured in these columns a British hand-made 

 vase, with a handle, found near Grantham. Through the 

 courtesy of Messrs. A. Brown & Sons we are now able to 

 illustrate a Yorkshire example of a somewhat similar type, 

 which was taken from a Bronze-Age barrow on the wolds near 

 Aldro in 1868 by Mr. J. R. Mortimer, who now has it in his 



museum at Driffield. The vessel, which is represented half-size 

 in the illustration, was found with the skeleton of a youth. At 

 the top and bottom are rows of small circles, a type of orna- 

 mentation rarely met with on potter}^ of this period. The 

 bottom of the vessel is ornamented by an incised cross. Further 

 details of this discovery will appear in Mr. Mortimer's forth- 

 coming work. 



Naturalist, 



