54 Six-Siddhanta is called their exceES (dhaa; when they move backward, it is called their deficiency (1). In these verses is laid beforo us the Hindu theory of the general nature of the forces which produce the irregularities of the apparent notions , Regarded as being the real motionx, of the planets. 'The Worla-wide diffeench between the spirit of the Hindu attonomy and that of the Greek is not Iass apparent her than in the manne of presentation of the elements in Bhe last chapte" be Que is pray cientifi deviix AmeAbox tor present ing and calculating the observed motion and abbepting nothing father Bhe ohher is not content without fabrieating a fantastie and absurd theory respecting the superlhunnan box which ceasion the movements with which it heaking. to Hindu nekhol nu& thi ।venie10t p uliarity that it albsolves from all necessity of tapting the distring fores to one another, utd nmaking the form (ne (D1xistent system able of georetti i representation Ind mathematical lemonstration; it repude the planets as actually moving in tire ar orbit, and the whole apparatus of epicycles given later in the chapte , as only a devise for stinating the atmount of he fo१०५ and of its resulting notion, xerted at any given point by the disturbing cause. The commentator ves two lifron1 explanations of the provector indl, spokm of in the third verse func, that it is the general current. nmentioned below , in xij. 78, as inapelling the whole fiyumanneld of starx, and which, though itself anoying Katward, rives the planets, :Om explained way, cards its own apex of motion, in the east; the other, that a separate vortex for each planet, called provoctor on account of its emalogy with that gene urrent, although } not moving in the same } iro tom , carries then around in their orlits froman west to east, leaving only the irregularities of their action to be produced by ote disturbing towee8 1')is latt{ we regArd as the proper meanin of the text: neilher is very consistent with the theory of the lagging behind of whe planets, given abovC, Am 25 23, /* bbe oxplanation of their Jayat eaturt notion The commentary also states more explicitly the method of production of the disturbance: a corrd of air, equal jn length to blue orbit of each planet less the disk of the latter itself, iw attructed in the extrentities of its diameter and passes bhrough the two hands of the being stationed at the point of disturbunc४ and he always draws it lower himself by the shope of the bwe parts of the word. Whe terrg here.which we have translated apx applies both to the upsis (mtould , unde: pex of flowost notion 6be apogee in the case of the sun and noon, the aphelion, though not recognized as such, in the case of the other planetA}, and to the onjunction {ggro, gigoced, apex of swi£e+y notion '). Whe talkeetment male the like effect of the two upon the motion of the planet.is liable to cause afficultby, if it be not distinctly kep in mind that the Hindus ndershgad
