Archived Content Notice: This publication is provided for reference, research or recordkeeping purposes. It is not
subject to the Government of Canada Web Standards and has not been altered or updated since it was archived. Please contact us to
request a format other than those available.
Publications of the Dominion Observatory, Ottawa, volume XXXI; Dominion Observatory. Publications of the Dominion
Observatory, Ottawa vol. 31, 1966, 426 pages (4 sheets),
https://doi.org/10.4095/329777 
Open Access