AS PRACTISED BY THE ARABS. 95 



opposite to and immediately above 28,011,963, the upper number in that 

 Rank by Art. |. 



/'. Add together in the Rank of the Quadratus Cubi this 10,606,095 

 and 28,01 1,963, and write the sum 38,618,058 opposite to and immediately 

 above them. 



v!. Transfer this 38,618,058 to the right hand one place. And this 

 38,618,058 so transferred, is now the upper number in the Rank of the 

 Quadratus Cubi. 



v'. Add 3, the second found figure of the Root, to 126, the upper 

 number in the row of the Latus by Art. k', and write the sum 129 opposite 

 to and immediately above it. This 129 is now the upper number in the 

 Rank of the Latus. 



w'. Multiply 3, the second found figure of the Root, into this 129, 

 and write the product 387 in the Rank of the Square opposite to and im- 

 mediately above 6,747, the upper number in that Rank by Art. mf. 



x'. Add together in the Rank of the Square this 387 and 6,747, and 

 write the sum 7,134 opposite to and immediately above them. This 7,134 

 is now the upper number in the Rank of the Square. 



y' . Multiply 3, the second found figure of the Root, into 7,134, and 

 write the product 21,402 in the Rank of the Cube opposite to immediately 

 above 199,348, the upper number in that Rank by Art. p'. 



z'. Add together in the Rank of the Cube this 21,402 and 199,348, 



and write the sum 220,750 opposite to and immediately above them. 



This 220,750 is now the upper number in the Rank of the Cube. 



b 1 



