December 3--The Age of the Earth. Dr. Shapley.
December 8--The Stuff Stars are Made of Dr. Cecilia H. Payne.
December 10--Classifying the Stars. Dr. Annie J. Cannon.
December 15--Stellar Evolution. Dr. Payne.
December 17--The Number and Sizes of the Stars. Dr. Luyten.
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December 22--Star Clusters and Nobulae. Professor Solon I. Bailey.
December 29--The Milky Way. Professor Bailey.
December 31--Measuring the Universe. Dr. Shapley.
January 5--Beyond the Milky Way. Dr. Luyten.
January 7--The Amateur's Work in Astronomy. Mr. Campbell.
January 12--New Stars and Variables. Dr. Cannon.
January 14--Relativity. Professor King.
January 19--Life in Other Worlds? Dr. Shapley.