All notices for the weekly CRIMSON Calendar must be placed in the notice box in the CRIMSON Office on Fridays before 5 o'clock, marked "For the CRIMSON Calendar."

Monday, December 21.

5.00 -- *Physical Colloquium. "The Kinetic Theory of the Characteristic Equation and of the Joule-Thomson Effect." II. Mr. R. H. Kent '10, Jefferson Physical Laboratory, Room 3.

7.00 --*Modern Language Conference. The Lyric Tradition in Spain." Professor J. D. M. Ford '94. Common Room, Conant Hall.

8.00.--**Yale Dramatic Association at Jordan Hall.

8.00.--**Christmas Carol Service. Student Choir of Theological Seminary, assisted by Mr. Harrison Keller, and an address by President Fitch at Andover Chapel.

8.15.--**47 Workshop production at Charlestown High School.

Tuesday, December 22.

Memorial Hall closes.

Musicians start on Western trip.

4.30.--**"Nietzsche." Lecture XXI. Professor Henri Lichtenberger in Sever 11 (In French).

7.00.--Dr. Frederick Palmer's Bible study class in Phillips Brooks House.

7.00.--Professor Rope's Bible study class in Phillips Brooks House.

8.00.--**47 Workshop production at North Bennett Street Industrial School.

Wednesday, December 23.

Vacation for all departments of the University begins.

8.00.--**Lowell Institute Lecture. Professor Henri Lichtenberger on "Le Drame Musicale Francais Contemporain."

8.00.--**47 Workshop production at South Bay Union.

Thursday, December 24.

8.00-10.00. -- President and Mrs. Lowell at home to students in the University.

Friday, December 25.

7.00.--Christmas celebration in Phillips Brooks House.