1S75.] Gr. Thibaut — On the S'ulvasutras. 257 



To the south, and to the north of this oblong, construct two other 

 oblongs like it, and dividing them by their diagonals remove their halves, so 

 that half a purusha remains as breadth at the jointure of atman and tail. 



The result is the form of the tail which we see in the diagram. 



At the place of the head a square is to be made with half a purusha, 

 and from the middle of its east side cords are to be stretched to the middle 

 of the northern and the southern side. 



The triangles cut off by these cords are to be taken away from the area 

 of the head. 



^TZT?n^ffrr ii RP^^n^R^'^Trr 1 



Then the four corners of the atman are cut off in the direction towards 

 the joining lines. This finishes the measurement of the s'yena. Its four 

 corners are cut off by four cords connecting the ends of the lines in which 

 the atman and the wings touch each other with the ends of the lines in 

 which head and tail are joined to the atman. 



A'pastamba now proceeds to the rules for the different sorts of bricks 

 required for the construction of the agni on the agnikshetra. 



One class of bricks has the length of the fifth of a purusha, the breadth 

 of a sixth, bent in such a way as to fit (the place in which they are to be 

 employed). This is the first class. 



By "nata, bent" the sutrakara means to indicate that the sides of the 

 brick do not form right angles. The shape of the brick is rhomboidical, the 

 angles, which the sides form with each other, are the same which the wings 

 of the s'yena form with the body. (See the diagrams of the two layers of 

 this chiti 11 and 12, in which the bricks are marked with numbers.) 



Two of those bricks joined with their long side form the second class. 

 These are the bricks used in the second layer at the point where the 

 curvature of the wings takes place. 



Increase that side of the first description which has the length of the 

 sixth of a purusha, by the eighth part of a purusha which is bent in such 

 a way as to fit in its proper place ; this is the third class. 



These are the bricks employed in the second layer, at the place where 

 atman and wings join. They consist of two parts ; the one part equal to a 



