A little close inspection with the naked eye will show three fifth- or sixth-magnitude stars above Antares and Sigma ([sigma]), which form, with those stars, the figure of an irregular pentagon. An opera-glass shows this figure very plainly. The nearest of these stars to Antares, the one directly above it, is known by the number 22, and belongs to Scorpio, while the farthest away, which marks the northernmost corner of the pentagon, is Rho in Ophiuchus. Try a powerful field-glass upon the two stars just named. Take 22 first. You will without much difficulty perceive that it has a little star under its wing, below and to the right, and more than twice as far away above it there is another faint star. Then turn to Rho. Look sharp and you will catch sight of two companion stars, one close to Rho on the right and a little below, and the other still closer and directly above Rho. The latter is quite difficult to be seen distinctly, but the sight is a very pretty one. The opera-glass will show a number of faint stars scattered around Antares. Turn now to Beta ([beta]) in Scorpio, with the glass. A very pretty pair of stars will be seen hanging below [beta]. Sweeping downward from this point to the horizon you will find many beautiful star-fields. The star marked Nu ([nu]) is a double which you will be able to separate with a powerful field-glass, the distance between its components being 40". [Illustration: MAP 8.] And next let us look at a star-cluster. You will see on Map No. 8 an object marked 4 M, near Antares. Its designation means that it is No. 4 in Messier's catalogue of nebulae. It is not a true nebula, but a closely compacted cluster of stars. With the opera-glass, if you are looking in a clear and moonless night, you will see it as a curious nebulous speck. With a field-glass its real nature is more apparent, and it is seen to blaze brighter toward the center. It is, in fact, one of those universes within the universe where thousands of suns are associated together by some unknown law of aggregation into assemblages of whose splendor the slight view that we can get gives us but the faintest conception.