264 G. Thibaut — On the S'ulvasutras. [Xo. 3, 



divided it into 289 parts, by dividing its side into 17 parts, and drew in tbe 

 centre of this square another one comprising 144 such parts (by the 

 method described above). To these two squares representing the outer and 

 inner edges of the felloe a third one, marking the area of the nave, had to 

 be added. For this purpose from the square of 144 parts a small square 

 of 16 parts, amounting to the eighth part of the whole, was cut out. Lastly, 

 of the 128 parts left for the space between nave and felloe, 64 were removed, 

 so that 64 were left for the sixteen spokes. 



Now by removing 64 parts, the agnikshetra was unduly reduced ; it 

 had to contain 289 parts, and it only contained 225. This deficiency had 

 of course to be made up in some way, and the way how to do that was not 

 very difficult to find. Sixty-four of two hundred and eighty -nine parts 

 were lost in the act of cutting out the interstices of the spokes, therefore 

 the area of the initial square had to be such that it would be equal to 7|- 

 square purushas after having been diminished by -^-/g. Accordingly, the 

 square equal to 1\ purushas had not to be divided into 289 parts, but into 

 225 parts, and 64 parts had to be added moreover, so that the loss of these 

 64 parts reduced the agnikshetra just to the right size. 



Hence Baudhayana's rules to make bricks equal to the two hundred 

 and twenty-fifth part of the agni, to add sixty-four such bricks, &e. 



The rules now following teach how to cover the kshetra of the sara- 

 vathachakra with two hundred bricks. 



Having divided the felloe into sixty-four parts and having drawn tho 

 separating lines, a circle is to be described in the middle (of the felloe). 



Thus we get one hundred and twenty-eight (bricks placed in the felloe). 



Every spoke is to be divided into four parts. We get therefore sixty- 

 four bricks in all spokes together. 



The nave is to be divided into eight parts (by radii). 



This is the first layer. 



Again, in order to avoid the " bheda", a different division of the agni- 

 kshetra had to be adopted for the second layer. 



In the second layer a circle is to be described in the nave at the dis- 

 tance of a quarter from the edge. 



In the same manner a circle is to be described in the felloe at the dis- 

 tance of a quarter from its inner edge. 



