82 Sing¢-Sahik its application to calculating an eclip88 1417, application of the paralilax in longitude in determining the moments of contact, ot separation, etc. 1. When the Sun's place is coincident with the meridian ecliptic-point (mathgulana), there takes place no parallax in longitude (herjj¢) : farther, when terrestrial latitude (alshi) and north declination of the meridian ecliptic-point (mathgabha) are the banne, there takes place a parallax in latitude (aact, {X 11 Tho latter of these specifications is entinely ye७uate hen the north declination of that point of the ecliptie which is at the moment upon the mexician (P¢2 akhyalayasee iii. 49) is equal to the ०lax(ryey's ].titude. regarded by the Hinus as always north---the ecliptieitself passes through the genith, nma beconmes a vertical circle: of course , then, the effect of parallax would be only to despre8; the body. in that circle, not to tlhrowit out of it. The other js less exact : when the sun is DIn hu memधंdian, there is intlced, no pa |lax in right a६४० nsionbut there longitude, unless he ecliptie is also 31 ed by a rMerition ere as belo in verse 4 and 5, the text commits the incuracy of substituting the midian ecliptie-poink (, in i¢. 26) to the entral a xt point of the cipie (3 in the new figure) ace point, although we are iurt h]n {y& 7) t alcat: th; Sjme ।nt cive of i१.x cpih-listance , is not ()nee distincy mem one} in the '। {ch mentary ९:]s it {bhannelyp1a h:: C'। + reliptic-point (typt $('+ tabove, ji. 43-48 : 8t is the point { in Fix. 23) [e&g th':' : ints t; this inaccuracy on the part of the hext. ' । 2A In orde" to illustrate the Hindu method of looking at the subject of para}lax, we make the following eition from the १ncrn position of it iven by the commentator Indler (bix vers: A Jhe end of the day of 1A IMOn .3% $y#) the sun and Fig. 2a moon have tlh same longitute; if now | morm has mo ale, then g li। Irawn from the eart}} '+ entre [g in the accompanying figure } to the Sun's plance [S] just touches the moon M7: hence. at the centre. the moon z becomes an eclipsing, and the sun an e¢lipsed, body . Since, however, non ne not at the earth's centre (garbha, omb "), but upon the earth's sur. fnce (prehild, '<bnck"), a line draw - - ७ ) from the earth's surface [B] up to the sum does not just touch the moon; but it cuts the moon's spheife above
