Edited by C.A. Chant.

Twenty-Fourth Year of Publication.

PREFACE

In the present issue of the Handbook is a list of stars occulted by the moon computed for Toronto, but valid for places three hundred miles distant. Computations for other places will be supplied when there is a demand for them. The American Ephemeris will hereafter include a list of stars computed for Washington.

It may be stated that four circular star-maps, 9 inches in diameter, roughly for the four seasons, may be obtained from the Director of University Extension, University of Toronto, for one cent each; also a set of 12 circular maps, 5 inches in diameter, with brief explanation, is supplied by Popular Astronomy, Northfield, Minn., for 15 cents. Besides these may be mentioned Young’s Uranography, containing four maps with R.A. and Decl. circles and excellent descriptions of the constellations, price 72 cents; Norton’s Star Atlas and Telescopic Handbook (10s. 6d .); Olcott’s A Field-book of the Stars ($1.50), and A Field-book of the Skies ($3.50); McKready’s A Beginner's Star Book ($5.00).

In the preparation of this Handbook the Editor has been assisted by Miss M. S. Burland and Dr. R. J. McDiarmid, of the Dominion Observatory, Ottawa; Mr. J. H. Horning, Toronto; Mr. W. S. Armstrong and his colleague, Dr. R. K. Young, of the University of Toronto.

The minima of Algol have been computed from an observation by Stebbins (Ap. J., vol. 53, 1921), J.D. 2422619.7866 with the period 2.86731077, given by Hellerick (A. N., vol. 209, p. 227, 1919).

Toronto, December, 1931.       The Editor.