Of Sixty Years. 211 



In the former year; whereas, the latter year is determined, according to 



D. D. P. V.P. A. Pi 



the agronomical rules oF the bed authority, as containing 365 15 31 31 24 

 of Hindu, or 36J 6 12 36" 33'* 36'"' of our, time. 



The Sdvan year m?y, as the Hindus obferve, be meafured by the follo- 

 wing method, which is little more than a tranflation from the Sanfcrit* 



Upon a large horizontal circle, note the point whereon the fun rifes, at 

 any time near the equinox, or, when his motion in declination is the mod 

 perceptible ; and count the number of Sdvan days, or of his fucceffive ri- 

 lings, from that time; until, having vilited the two folftices, he mail be 

 returned near to the original mark : then, repeat the operation, until he 

 rifes next after pulling over that original or firit-made mirk, and compute 

 the proportion which the fpace, whereby he (hall have fallen (Hoist of it, in 

 the laft. obfervation but one, bears to the whole fpace contained between the 

 marks made of his two -laft .Tilings, accounting that fpace to contain 60 

 Dundas, cr one Sdran day : the refuk will be the -fraction of a day, and it 

 will be the excefs of the year over 365 days, or number of times that the 

 fun will have been foundto rife above the horizon du ring fuch an obferva- 

 tion of his prog-efs th ough the ecliptick.. This fraction the Suryti Siddhavtz 



D. D. P. V.P. A.K D. D. P. V P. A,P„ 



ftates as o 15 31 31 24, and the Siddbdnta Sirdmani as o 15 30 22 30 ; 

 ■but it is not probable, that either quantity was determined by To fimple and 

 mechanical a method alone, ©r without recourfe to a feries of observations 

 >rnade at diflant periods. 



The Vrihafpati mana, cf which the cycle of fixty years is compofed, is 

 ihus defcribed in the comment on the foregoing^au ; 



Cc 2 



