1875.] G. Thibaut— On the S'uhasutras. 251 



of both these poles two other poles are to be fixed at equal distances. 

 Then taking a cord of the length one intends to give to the side line 

 (breadth) of the oblong, one makes ties at both its ends and a mark at its 

 middle. Then one fastens the two ties at those two of the three eastern 

 poles, which stand at the outside, stretches the cord towards the south 

 holding it by tbe mark, and makes on this mark (*. e., on the spot where 

 the mark touches the ground after the cord has been stretched) a mark. 

 Then fastening both ties at the middle pole one stretches the cord over 

 the mark (on the ground) towards the south, and fixes a pole on the mark 

 (i. e., on the spot touched by the mark on the cord). That is the south- 

 east corner of the oblong ; thereby are explained likewise the north-east 

 corner and the two western corners. 



In the last place I give a method of chaturas'rakarana, which is found 

 in Baudhayana only, but there in the first place. It seems to be the most 

 ancient of all the methods enumerated. 



If you wish to make a square, take a cord of the length which you 

 desire to give to the side of the' square, make a tie at both its ends and a 

 mark at its middle ; then having drawn the prachi line, fix a pole in its 

 middle, and having fastened at that pole the two ties of the cord, describe 

 with the mark a circle round it. Then fix poles at both ends of the diame- 

 ter (formed by the prachi), and having fastened one tie at the eastern pole 

 (the pole standing at the east end of the prachi), describe a circle with the 

 other tie (i. e., with the full length of the cord). In the same manner a 

 circle is described round the pole at the west end of the prachi, and another 

 diameter is drawn joining the points in which these two circles intersect 

 (this diameter is the line pointing to the north and south points). A pole 

 is fixed at both ends of this diameter. Having fastened both ties at . the 

 eastern pole, describe a circle round it with the mark. The same is to be 

 done in the south, the west, and the north (i. e., circles are to be described 

 round the three other poles) ; the points of intersection of these four circles 

 which (i. e., the points) are situated in the four intermediate regions (north- 

 east, north-west, &c.,) are the four corners of the required square. 



Diagram 9. 



Passing over some rules of less importance, I proceed to those which 

 refer to the " squaring of the circle." It certainly is a matter of some in- 

 n h 



