838 पृथु-Siddhesia imperfect way; bhat is should have marked time, and continued to ऑny period to correspond in position with bhs actual sphere, is inappEdule. The word which, upon the authority of the consentiatoE, we have ॐendered wate, in verse 16, i€ ¢r>garboa, literally having HE im Imortal flow perhaps the phrase should be translated rather, rnmaging a constant current of water 9. So also, one should construct instruments {g¢xtra) in order to the user tainment of time. 20. When quite alone, one should apply quicksilver to the wonder-causing instrument. By the gnomon (¢abel), stuff ४sht), are (), wheel (calkara), instruments for taking the shadowof various kinds 21. According to the instruction of the preceptor (gue, is to be gained a knowledge of time by the diligent. the commentator interprets the first part of verse 20 in correspond. ence with the sense of the preceding passage : the application of rmercury bc a revolving 1Behlna, in order to give it the ppearance of automati । motion, must be made privabb lest people, understanding the method ०% Well, should conse to wonder at it. The instruments mentioned in she latter half of the Burme verse are explained in the commentary simply by citations for the !0+ tradhagawa, < chapter of instruments,” of the sitddhant(Golady, P. 111-186, published edubion). We will t•UOmumi xtbato, as briefly as may be, their character: 'he glomon (getke) needs no explanatioE: its construction and the rnethod of using it have been fully exhibibed in the bhizd chapter of our treatise. 'The staf-instruumment 'y (gashtigateis described a8 follows A circle is de>&ribed upon a leve surfuge with a radius proportioned to that of the sphere, or to tabula redius. Its cardinal points are 850a tained, and its east and West and north and south diameters are drawn From the former, at either extremity. is laid of thhe sine of anplitude (gr¢) a£certained by calculation for the given day : the points thus deter ning upon the circumference of the circle represent the points on the thorizon १f which the sun ises and sets. Another circle, with a rediu proportioned to that of the calculated diurnal circle of the day (dayagd), is also alsoribed About the centre of bhe other, and is divided into sixty equp1 p$g, representing bhe division of the sun's deily revolution into sixty na¢is, into a depassion at thhe centre, the fook of a day (wushk). equal in length to the radius of the larger circle, is loosely inserted. When is desired t ascertain the time of the day, this staf is pointed divestly towad the un, or in such manner that it casts no shadow ; its extremi
