C— *#.w.3 



£ J 



824 Exacts from the Mohit. [Oct. 



lay this beside, multiply again sixty with 



v4> eleven, divide what you obtain with thirty, 



and add the issue ( 2 ) of the division to the 



Mahssool; if that what remains of the thirty, is less than nineteen it 



is not counted, if it is more it is counted for thirty. The Mahssool 



s (3j and what issues by the division in seven parts, 



^ what remains is called the fundament ( 3 ). 



x^tj*,) If there be no fraction, it is called fundament of the seven. 

 The beginning is from Tuesday, and the day with which the calcula- 

 tion ends is the first Moharrem of the year. If you wish to know the first 

 day of any other month, you must count each two months of the lunar 

 ones for three, viz. the first for two, and the second for one ; subtract 

 them of the lunar fundament; if it exceeds seven, that number and 

 the rest gives the fundament; if it is no fraction it is again the 

 fundament of seven ; the day to begin with is Tuesday, on the last day 

 is the first of the month inquired for. For example, if you wish to 

 know the first of Moharrem of the year 961, throw away the hundreds, 



y (4) (900) ^*>3'Lc and from the rest one; multiply 

 & j 5""* t h e rest (4) w ith f our ^ w hich makes 240 ; this 



which I suppose ig caUed the Mahssoo i ; multiply again sixty 



stands for &&Jjf*aS with eleven, which gives 6G0 ; divide it with 

 30, the quotient is 22, which added to the 

 Mahssool gives 262; if you divide this with seven, there remains 

 three for the fundament, beginning with Tuesday, the last day is 

 Thursday, which proves to be the first of Moharrem. 



Now if you wish to know the first day of any other month, for 

 example the first of Ramasan, begin to count from Moharrem, which 

 gives eight months, counting Moharrem for two, Isafer for one, and so 

 on (the first month counting for two, the second for one) so the above 

 eight gives twelve; add to it the fundament of this year (3) you obtain 

 15; subtracting from it the seven (contained therein twice) remains 

 one. Beginning again to count from Tuesday, you arrive at the end 

 again to Tuesday, which is the first of Ramasan, and so on. 



Section III. Of the fundament of the Solar year. 



The solar year is called also the year of the Boroody (the 12 con- 

 stellations of the zodiacus) the Roman and Coptic year. The way 

 of finding it is the following. You throw away the hundred and the 



exceeding year. u£j>**£ j ^U The rest, whatever it may be, 



