No Immediate Fear of Extinction Some further interesting details of Professor H. N. Russell's division of the stars into two groups of giants and dwarfs were given by Professor J. B. Dale to a representative of the "Morning Post."
He said the measurement of Betelgeuse was made by the Mount Wilson Observatory, California, in December last, with a 100-inch telescope. The method employed was that suggested by Professor Michelson, and it had never previously been applied to the determination of the diameter of the stars. Betelgeuse was found to have a diameter of 200 million miles, whereas that of the sun was only 866,000 miles, Similarity the spectra of stars showed that they were similar to our sun, and,' therefore, the greater brightness of the giants could only be due to their larger size.
Text read from the printed page and cleaned; old type leaves the occasional error.