পাতা:পদার্থবিদ্যাসার.djvu/১৭

6 otAtoGUE II. of the firway.NT AND HEAVENLY Bodies. Popil. Which of the works of God should first engage my attention ? * Tutor. Turn your eyes up to the firmarueut, that wide, boundless space, in which you may observe the sun, the moon, the planets, the comets, and the stars. toup. What are the principal qualities of the fir. mament? Tut. Extent and transparency. It must be very extensive, to contain so many heavenly bodies. and otherwise we could not set the in . Its extent cannot, indeed, be computed, and its transparency is equally amazing. - Pup. W hy is the firmament blue, and the produce of the earth.groen 2 Tut. Because these two soft-pleasing colours arc agreeable to the eye, and neither weary nor injure the sight, as some others do. Pup. What stars are thosc which we see of a clear evening & out. Some of them are great bodies, like oursun, and probably, like it, destind to afford light and heal to a number of planetary bodies that revolve ಹಿಂukthaು. £up. If they are so great, how is it that they appear805ಋaj