270 G. Thibaut — On the S'uhasutras. [Xo. 3, 



Divide all this — tbe height inclusive the added fifth part — into three 

 parts, and make bricks with the fourth or the ninth or the fourteenth part 

 of two of these three parts. 



With the fourth for the agni of five layers, with the ninth for the agni 

 das'achitika, with the fifteenth for the panchadas'achitika. 



Having constructed with these bricks either four or nine or fifteen 

 layers, the remaining part of the height (amounting to one third) is to be 

 divided in a downward direction by the diagonal and half of it to be remov- 

 ed. 



That means : the fifth layer is to be constructed with bricks the 

 height of which is equal to the third part of the whole height ; and then 

 half of the whole layer is to be cut off following the direction of the diago- 

 nal of the northern and southern side. In this way the cubic content of 

 the whole chiti comes out right. Increasing the height of the agni of five 

 layers by its fifth part, we get 32 + 6f = 38f angulis. This divided 

 by three and the quotient multiplied by two, gives 25f . The fourth part 

 of this, 6| angulis is the height of the bricks of each of the four first 

 layers. The fifth layer, before being cut in two, is 12-f angulis high ; after 

 the removal of its half, it has this height only on its east side, the height 

 on the west side being equal to 0. Thus its middle height is 6§, and conse- 

 quently the middle height of the whole chiti = 32 angulis. In the same 

 way we get as height of the agni of ten layers 76-f angulis on the east side, 

 51-|- on the west side, 64 angulis as middle height. The corresponding 

 numbers for the panchadas'achitika agni are 115-f-, 76f, 96. 



Regarding the time in which the S'ulvasiitras may have been composed, 

 it is impossible to give more accurate information than we are able to give 

 about the date of the Kalpasutras. But whatever the period may have 

 been during which Kalpasutras and S'ulvasutras were composed in the form 

 we have now before us, we must keep in view that they only give a 

 systematically arranged description of sacrificial rites, which had been 

 practised during long preceding ages. The rules for the size of the various 

 vedis, for the primitive shape and the variations of the agni, &c, are given 

 by the brahmanas, although we cannot expect from this class of writings 

 explanations of the manner in which the manifold measurements and trans- 

 formations had to be managed. Many of the rules, which we find now in 

 Baudhayana, A'pastamba, and Katyayana, expressed in the same or almost 

 the same words, must have formed the common property of all adhvaryus 



