The Handbook for 1921 follows the same lines as that for 1920. The chief difference is in the omission of the extended table giving the distance, velocities, and other information regarding certain fixed stars; and the substitution of a fuller account of the planets for the year, with maps of their paths.
In this issue of the Handbook several errors, which were pointed out by widely-distributed friends, have been corrected. These were chiefly in the tables headed “The Distances of the Stars” and “The Brightest Stars.”
The suggestion was received that a set of star-maps with brief descriptions of the constellations, such as at one time appeared in the Handbook, should be included again. It has not been found possible to do this, chiefly on account of the expense involved.
The Handbook for 1926 is similar to that for 1925, which was somewhat larger than those issued for some years before that date. The increase consisted chiefly in a comprehensive table embodying the most important information known regarding 260 of the brightest stars. This table was prepared by Mr. W. E. Harper of the Dominion Astrophysical Observatory, Victoria, B.C. As in past years, Mr. R. M. Motherwell, of the Dominion Observatory, Ottawa, supplies the list of stars occulted by the Moon.
The Handbook for 1925 is somewhat larger than those issued in the last few years, a table containing the most important information regarding some 260 of the brighter stars being added. This was prepared by Mr. W. E. Harper, of the Dominion Astrophysical Observatory, Victoria, B.C. There is also an account of the total eclipse of the sun of January 24, 1925, by Mr. R. M. Motherwell of the Dominion Observatory, Ottawa.
The Handbook for 1924 follows the same lines as that for 1923, but corrections to some of the tables have been made in order to bring them up to date. The general sketch of the planets will be found useful in giving a view of their phenomena during the entire year, while under the heading "The Sky for the Month" are given further details.