The Harvard College Observatory, following its custom of past years, of giving lectures open to the public, last night announced seven lectures beginning October 29 and ending January 31. These lectures which begin at 7 o'clock are planned for people who are interested in astromony but who do not care for its technical aspects. After each lecture, which will be given by some authority on the subject, telescopic observations of celestial objects will be offered those who attend when the weather permits.

These lectures are open to the public free of charge, but tickets, which may be obtained by writing to the Harvard College Observatory or by telephoning University 0390 between 9 and 11 o'clock in the morning, are necessary for admittance.

The Observatory has two entrances, one on Concord Avenue opposite Buckingham Street and the other on Garden Street opposite Linnacan Street.

The dates, titles of lectures, and speakers follow:

October 29.--"Eclipses of Sun and Moon." Professor H. T. Stetson.

November 14.--"The Variation of Stars." Mr. Leon Campbell.

November 27.--"Stellar Motions." Dr. W. J. Luyten.

December 5.--"The Origin of the Earth." Professor Harlow Shapley.

December 13.--"Ancient and Modern Telescopes." Professor E. S. King.

January 11.--"Nebular." Professor J. C. Duncan of Wellesley College.

January 31.--"Harvard Observatories in Chill and Peru." Professor S. I. Bailey.