It is chiefly remarkable for the close spectroscopic analysis to which it has been subjected by Messrs.

Huggins and Miller.

Unlike Betelgeuse, the spectrum of Aldebaran exhibits the lines corresponding to hydrogen, and no less than eight metals--sodium, magnesium, calcium, iron, bismuth, tellurium, antimony, and mercury, are proved to exist in the constitution of this brilliant red star.
On the right of Aldebaran, in the position indicated in Plate 1, Map I., are the stars [zeta] and [beta] Tauri.

If with a low power the observer sweep from [zeta] towards [beta], he will soon find--not far from [zeta] (at a distance of about one-sixth of the distance separating [beta] from [zeta]), the celebrated Crab nebula, known as 1 M.This was the first nebula discovered by Messier, and its discovery led to the formation of his catalogue of 103 nebulae.

In a small telescope this object appears as a nebulous light of oval form, no traces being seen of the wisps and sprays of light presented in Lord Rosse's well known picture of the nebula.
Here I shall conclude the labours of our first half-hour among the stars, noticing that the examination of Plate 1 will show what other constellations besides those here considered are well situated for observation at this season.