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THE PLANET JUPITER.

cloudy and ill-defined appearance of the markings usuallyseen, it may give our readers some idea of the amount ofdetail which is visible in a powerful telescope. In Plate VIII.are three very interesting views, selected from a large numberrecently presented to the lioyal Astronomical Society by Mr.G. D. Hirst, of Sydney, N. S. Wales , who has paid specialattention during the last few years to the observation anddelineation of the planet. The view marked No. 1 was obtained

Fig . LXVII.—Jupiter as observed by Mr. De La Rue, October 25th, 1856.

with a 10£ in. silvered-glass reflecting telescope, and a magni-fying power of 214 ; the 2nd and 3rd views with a in. Merzrefractor and a magnifying power of 200. It may he well tomention that the copies of the original drawings have beenreversed in the Plate, in order that they may represent theview that would he seen in a telescope by an observer ino’ur northern latitudes.

They all illustrate the great variety and constant changein the belts and markings to which we have already referred ;