Then, again, you take a certain style of star, which you learn from Professor Simon Newcomb is such a distance that it takes 50,000 years for its light to reach Boston. Now, we will suppose that after looking over the large stock of new and second-hand stars, and after examining the spring catalogue and price list, I decide that one of the smaller size will do me, and I buy it. How do I know that it was there when I bought it? Its cold and silent rays may have ceased 49,000 years before I was born and the intelligence be still on the way. There is too much margin between sale and delivery. Every now and then another astronomer comes to me and says: “Professor, I have discovered another new star and intend to file it. Found it last night about a mile and a half south of the zenith, running loose. Haven't heard of anybody who has lost a star of the fifteenth magnitude, about thirteen hands high, with light mane and tail, have you?” Now, how do I know that he has discovered a brand new star? How can I discover whether he is or is not playing an old, threadbare star on me for a new one? We are told that there has been no perceptible growth or decay in the star business since man began to roam around through space, in his mind, and make figures on the barn door with red chalk showing the celestial time table. No serious accidents have occurred in the starry heavens since I began to observe and study their habits. Not a star has waxed, not a star has waned to my knowledge. Not a planet has season-cracked or shown any of the injurious effects of our rigorous climate. Not a star has ripened prematurely or fallen off the trees. The varnish on the very oldest stars I find on close and critical examination to be in splendid condition. They will all no doubt wear as long as we need them, and wink on long after we have ceased to wink back. In 1866 there appeared suddenly in the northern crown a star of about the third magnitude and worth at least $250. It was generally conceded by astronomers that this was a brand new star that had never been used, but upon consulting Argelander's star catalogue and price list it was found that this was not a new star at all, but an old, faded star of the ninth magnitude, with the front breadths turned wrong side out and trimmed with moonlight along the seams. After a few days of phenomenal brightness, it gently ceased to draw a salary as a star of the third magnitude, and walked home with an Uncle Tom's Cabin company. [Illustration: A NIGHTLY VIGIL.]