'Open Night' Set

The College Observatory will hold its annual summer "Open Night" this Monday, the Summer School has announced. Visitors will be taken on a tour of the Observatory and will hear a lecture on "Meteorites" by John S. Rinehart, assistant director of the Smithsonian Astrophysical Observatory.

Officials emphasized that free tickets must be obtained in advance by calling in person or sending a selfaddressed letter to the Observatory, at 60 Garden St. Since only 100 of the 245 tickets are left, students are urged to apply soon. Three tickets may be obtained per request. The program will begin at 8:15.