PREFATORY NOTE 



The need for a new edition of this volume allows 

 me to correct some misprints and mistakes in the 

 text and translation. I am gratified to reviewers 

 for pointing out a few that I had not noticed myself. 

 Some of the mistakes of nomenclature were due to 

 the plan of publication, which prechided postponing 

 Book I, PUny's Table of Contents, till the whole of the 

 treatise had been worked through and the objects 

 mentioned had been so far as possible identified by his 

 descriptions. 



H. R. 



October, 1943. 



V» 



