1891]. on the Discoverij of the " Tomb of Aristotle.'' 427 



was a man of letters, as evidenced by the pen and styluses, and a 

 philosopher, as indicated by the statuette. When to this was added 

 the startling inscription which was disch)sed in the adjoining space, 

 the chain of historical and circumstantial evidence appeared to be 

 almost irresistible. 



The lecturer concluded his discourse with an enunciation of the 

 principles by which in researches of this character, according to the 

 doctrine termed by the late Henry Bradshaw, " prince of librarians 

 and bibliographers," the doctrine of equivalents, a date might be 

 assigned to a book or a work of art by the concurrence of notes or 

 indications which were independently known to have been prevalent 

 at a particular period. 



The lecture was admirably illustrated from photographs taken for 

 Dr. Waldstein by Mr. and Mrs. Gordon Oswald. 



