▁to ▁modern ▁conditions , ▁is ▁the ▁Third ▁T ant ra ▁or ▁division ▁of ▁Ne el ak anth a ' s ▁larger ▁work , ▁T aj ika ▁Ne el ak anth i . ▁Pr as na ▁T ant ra ▁is ▁divided ▁into ▁four ▁chap ters , ▁viz ▁– ▁Pr as na ▁V ich ara ▁( pre lim in aries ), ▁Bh ava ▁Pr as na ▁( questions ▁bearing ▁on ▁different ▁houses ), ▁V ishes ha ▁Pr as na ▁( special ▁questions ) ▁and ▁P rak ir nak ad hy aya ▁( con cluding ▁remarks ). ▁The ▁aspects ▁considered ▁by ▁this ▁work ▁are ▁those ▁of ▁the ▁T aj ika ▁system , ▁an ▁aspect ▁by ▁itself ▁has ▁no ▁orb ▁but ▁plan ets ▁have ▁or bs ▁of ▁operation ; ▁Y og as ▁in ▁this ▁system ▁arise ▁on ▁the ▁basis ▁of ▁applying ▁and ▁separ ating ▁aspects , ▁the ▁closer ▁the ▁y oga ▁( I th s ala ▁etc ., ), ▁the ▁more ▁certain ▁will ▁be ▁the ▁results . ▁The ▁rules ▁and ▁methods ▁initi ated ▁by ▁this ▁text ▁have ▁found ▁favour ▁with ▁ast ro log ers ▁since ▁the ▁time ▁it ▁was ▁written ▁and ▁came ▁to ▁light ▁around ▁ 1 5 8 0 ▁A . D . ▁ ▁Pr as na ▁T ant ra ▁by ▁Ne el ak anth a ▁and ▁Da iv ag ya ▁Vall ab ha ▁of ▁Var ah ami hi ra ▁are ▁a ▁must ▁to ▁cover ▁Pr as na ▁or ▁Hor ary ▁ast ro log y . ▁ ▁See ▁also ▁As ht am ang ala ▁pr as