If we now know our northern sky, if its most important stars are sufficiently noted down in our mind, with the reciprocal relations which they preserve among themselves, we have no more confusion to fear, and it will be easy to recognize the zodiacal constellations. This zone may be of use to us as a line of division between the north and the south. Here is a description of it: The Ram, which, moving in front of the herd, and regulating, so to say, the march, opens the series. This constellation has in itself nothing remarkable; the brightness of its stars indicates the base of one of the horns of the leader of the sheep; it is but of the second magnitude. After the _Ram_ comes the Bull. Admire on a fine winter’s night the charming Pleiades which scintillate in the ether; not far from them shines a fine red star—this is the _eye_ of the Bull—Aldebaran, a star of the first magnitude and one of the finest of our sky. We now arrive at the Twins, whose heads are marked by two fine stars of the second magnitude, situated a little above a star of the first magnitude—_Procyon_, or the Little Dog; _Cancer_, or the Crab, a constellation very little conspicuous (its most visible stars are but of the fourth magnitude, and occupy the body of the animal); the _Lion_, a fine constellation, marked by a star of the first magnitude, _Regulus_, by one of the second, β, and by several others of the second and third magnitudes arranged in a trapezium; the _Virgin_, indicated by a very brilliant star of the first magnitude; _Spica_, situated in the neighborhood of a star, also of the first magnitude, Arcturus, which is found on the prolongation of the tail of the Great Bear; the _Balance_ (Libra), indicated by two stars of the second magnitude, which would exactly resemble the Twins if they were nearer to each other; the _Scorpion_, a remarkable constellation; a star of the first magnitude, of a fine red color, marks the _Heart_ (Antares), in the middle of two stars of the third magnitude, above which are three bright stars arranged in a diadem; _Sagittarius_, the Archer, of which the arrow, indicated by three stars of the second and third magnitudes, is pointed toward the tail of the Scorpion; _Capricornus_, a constellation not conspicuous, which is recognized by two stars of the third magnitude very near each other, and representing the base of the horns of the hieroglyphic animal; _Aquarius_, indicated by three stars of the third magnitude arranged in a triangle, of which the most northern occupies a point on the equator; _Pisces_, the _Fishes_, composed of stars, barely conspicuous, of the third to fourth magnitudes, situated to the south of a large and magnificent quadrilateral—the Square of Pegasus—of which we have already spoken.