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Updated: May 9, 2025
Three years have passed since I heard the eminent observer Otto Struve, of Pulkowa, give an elaborate account of a companion to the star Procyon, describing the apparent brightness, distance, and motions of this companion body, for the edification of the Astronomer-Royal and many other observers. But I could not then see, nor has any one yet explained, how this could be.
From measurements of 200 negatives taken in 1886, he derived for that classic star a parallax of 0·438", in satisfactory agreement with Ball's of 0·468". A detailed examination convinced the Astronomer-Royal of its superior accuracy to Bessel's result with the heliometer.
Even the astronomical part was difficult, for I had to translate analytical formulæ into intelligible language, and to draw diagrams illustrative thereof, and this occupied the first seven sections of the book. I should have been saved much trouble had I seen a work on the subject by Mr. Airy, Astronomer-Royal, published subsequently to my book.
We know now that had the astronomer-royal put sufficient faith in this result to point his big telescope at the spot indicated and begin sweeping for a planet, he would have detected it within 1-3/4º of the place assigned to it by Adams.
I advanced this theory to account for the origin of whirlwinds in a paper read before the Philosophical Institute of Victoria in 1857. It was afterwards communicated by the Astronomer-Royal to the "London Philosophical Magazine", where it appeared in January 1859.
In less than two years he reached a definite conclusion; and in October, 1845, he wrote to the astronomer-royal, at Greenwich, Professor Airy, saying that the perturbations of Uranus could be explained by assuming the existence of an outer planet, which he reckoned was now situated in a specified latitude and longitude.
The conditions of the transit of December 8, 1874, were sketched out by Sir George Airy, then Astronomer-Royal, in 1857, and formed the subject of eager discussion in this and other countries down to the very eve of the occurrence. In these Mr.
LALANDE recommended to BONAPARTE to double it. The First Consul took his advice: and the French now have tables that greatly surpass those which are used in England. A copy of these have, I understand, been sent to Mr. MASKELYNE, our Astronomer-Royal at Greenwich. The French having at length procured able calculators, are now able to dispense with the English Ephemeris.
Of course he was quite right in his facts, and quite wrong in his inferences; as the Astronomer-Royal pointed out in a brief letter, closing with the remark that, 'as a very closely occupied man, Mr. Airy could 'not enter further into the matter. But further Mr. Reddie persisted in going, though he received no more letters from Greenwich.
Reddie admitted, in the correspondence above named, that he had not known some facts and had misunderstood others, afforded to my mind the most satisfactory proofs of his straightforwardness. It may be instructive to consider a few of those paradoxes of Mr. Reddie's which Professor De Morgan found chief occasion to pulverise. In a letter to the Astronomer-Royal Mr.
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