SHAPLEY WILL GIVE HALLEY LECTURE AT OXFORD IN JUNE

Dr. Harlow Shapley, director of the Harvard College Observatory, has been selected to deliver the annual Halley Lecture at Oxford University on June 18. This lecture, which is delivered each year by some well-known astronomer, is named for Edmund Halley, who lived during the last half of the seventeenth, and first half of the eighteenth centuries. Halley, particularly famous for his cometary researches, encouraged Isaac Newton to the publication of his "Principia" and to the announcement of the law of gravitation.

Dr. Shapley has chosen for the subject of his address "The Center of the Galaxy," and will present an account of his researches on the extent and structure of the Milky Way.

In July, Dr. Shapley, as president of the American Section, will attend the meetings of the International Astronomical Union in Leiden, Holland, and of the Astronomische Gesellschaft in Heidelberg, Germany.