674 Ibn QotaybaKs Adab al KdtiV on Arabic Astronomy. [Dec. 



the star, for the stars are only the limits which divide one mansion from 

 another, but these were called after the stars, and now the names of the 

 stars are applied to the respective mansions. Every mansion has 13j-^- 

 days, for this is the result if you divide 365^, the number of days of 

 the solar year by 28. The almanack of the mansions is calculated by 

 the solar year, for their apparition (read \&jj$* instead of ^>j^) is con- 

 nected with the solar year. Every mansion has therefore thirteen days 

 or degrees. But the solar year is one day and one fourth of a day 

 longer than this period (i. e. 28x13 days), therefore one day is 

 added to the last mansion, which is called jabhat. To make up for the 

 remaining fourth, a day is intercalated every four years in the mansion 

 of the jabhah. The sharafan are considered the first mansion, for they 

 are in Aries, which is the first sign of the Zodiac." 



t^iL<J) ^o *&i±sCjj ^Ujtftjj Aaaa.1/0 c-jj*!) J) J^ JWj 

 fyi iV J*^l jXmv« j)i\A* ^xl) ^s)j ^J \ykxs\so ^Uxj) ^jb k/olfe 



&/clfr xk j£J] J*J LXU3 *,J J^lsr^^ C1?^JJ * <W j\/0 \JDjA,*j j &ljj j 



^LaIJ J*j^ ^A^V) cu^y ILti)^ j,^jJ) J^j ^/^^ <Sj^ 



l^Jsb ^Um 5) *cij?> lyt^j J, til) *fc^ A*a«3) ^U <*SlSS j t^XJI 



j^J) ^5 ^a> Uo| ^ k)J^ \^s ; ^>*>tfj J/J^l *U^ ^ **V 



£*AD| ^jJI ^i ^£1 ^yi SjJ^U lil^SJI ^jd*)) )^ ^ 

 LiU ^^i w<J| <— J is* ax* jjkJ ^ jj) ^iyJ) ^1 ^^1 ^ 



