MOVEMENT & PROGRESSION OF ANIMALS 



The chief mss. of the De motu animalium are E, Y, 

 P and S." Of these E, one of the most famous of 

 AristoteUan mss., is the oldest ; Y is closely related 

 to E. P and S are similarly related and form a second 

 group. 



Of the De incessu animalium the principal mss. are 

 Z, Y, U, S and P.« Of these Z is the oldest, and Y is 

 closely related to it, while the other three mss. form 

 another group. 



A full account of these mss. and their relations to 

 one another will be found in the Introduction (pp. 

 iv. ff.) of W. W. Jaeger's text (Teubner, 1913). 



The text used for the present translation is based 

 on that of I. Bekker, all divergences from which are 

 noted and the authority given for the reading adopted. 

 Jaeger's text and apparatus criticus have been con- 

 sulted throughout. 



The Commentary of Michael Ephesius (Com- 

 mentaria in Aristotelem Graeca, xxii. 2, Hayduck, 1904?) 

 has been of some assistance both for the text and for 

 the interpretation, and the Latin version of Nicholaus 

 Leonicus (died 1599)> printed in the Berlin Aristotle, 

 Vol. Ill, has been constantly consulted. 



The two treatises have been translated into French 

 by J. Barthelemy-Saint-Hilaire, and into English by 

 Mr. A. S. L. Farquharson in the Oxford translation 

 (1912). This translation with its ample explanatory 

 notes constitutes much the most serious attempt that 

 has been made to interpret these two treatises, and 

 anyone who follows in Mr. Farquharson 's footsteps 

 must necessarily be heavily indebted to him. 



E. S. F. 



*• For the meanings of these symbols see pp. 439 and 483. 



437 



