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Crellic Pontain Sectory 13
Page 11
In its main lines the spectrum of a star corresponds to its colour, and we may roughly group the stars into red, yellow, and white. This is also the order of increasing temperature, the red stars being the coolest and the white stars the hottest. We might therefore imagine that the white stars are the youngest, and that as they grow older and cooler they become yellowish, then red, and finally become invisible--just as a cooling white-hot iron would do. But a very interesting recent research shows that there are two kinds of red stars; some of them are amongst the oldest stars and some are amongst the youngest. The facts appear to be that when a star is first formed it is not very hot. It is an immense mass of diffuse gas glowing with a dull-red heat. It contracts under the mutual gravitation of its particles, and as it does so it grows hotter.
In the course of them, as is well known, masters and slaves were supposed to be on an equality; indeed, the former waited on the latter.[4] Presents were mutually given and received, as Christmas presents in these days. Towards the end of the feast, when the sun was on its return, and the world was considered to be renovated, a king or ruler was chosen, with considerable power granted to him during his ephemeral reign, whence may have sprung some of the Twelfth-Night revels, mingled with those in honour of the Manifestation and Adoration of the Magi. And, in all probability, some other Christmas customs are adopted from the festivals of the ancients, as decking with evergreens and mistletoe (relics of Druidism) and the wassail bowl. It is not surprising, therefore, that Bacchanalian illustrations have been found among the decorations in the early Christian Churches. The illustration on the following page is from a mosaic in the Church of St. Constantine, Rome, A.D. 320.
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