184 Notice of the Ikhwdn al safa. [Aug. 



period of probation, during which the soul ought to be perfectionated 

 and prepared for a future state : knowledge is the food of the mind. 



14 (27.) On the extent of the powers of the human mind to pene- 

 trate into the mysteries of the universe ; e^^Us^*. 



15 (28.) What is life and what is death ; o>JlA*Al*,y. 



16 (29.) On pleasure and pain both of mind and body and in this 

 life and in the life to come p$ ilfjoloJJl&jAU^. 



17 (30.) Causes of the difference of languages cbUUlcil&SJ Jl*,y. 



III. Section. 



1 (31.) On the origin of things according to the notions of Pytha- 

 goras. It is shown in this chapter that God has created every thing 

 (in opposition to the opinion of those who maintain that the word is 

 eternal), and that the system of the world is contained in the units of 

 the decimal system. 



2 (32.) On the origin of the logos <J&£ (i. e. intellect considered as 

 a substance and not as a faculty). 



3 (33.) The world is a human being magnified sU^sr] Jy^*-*^ 9 



4 (34.) On intellect (as a faculty of the mind), and the object of 

 intellect JjWf* JWl^i. 



5 (35.) On the revolutions and orbits of the stars j!j^% jty^J*. 

 The authors enter at some length on the sideral period, or Yugas of 



the Hindus, which became known to the Arabs by a translation of the 

 Siddhanta. 



6 (36.) On Love (j&Ji&aU J>. 



7 (37.) On the resurrection and immortality of the soul AaaU^* 



8 (38.) On motion c^s^u^'l/ 



9 (39.) On cause and effect o^Ujt^ JlJl^i. 



10 (40.) On the nature of simple and compound bodies ty&sh^s 



IV. Memoirs on law taM^lJJlJLiLejJf. 



1 (41.) Onthe different religions and philosophical sects ^ti\j^\Js. 



This chapter is very long, but the reader, who would expect to find 



any facts on the systems of philosophy or heresies then in vogue among 



