University Calendar.

14. TUESDAY.

Mathematical Seminary. Some Curves described by linkages. Mr. R. P. Alexander University 19, 2.30 p. m.

The lecture will be followed by a discussion of problems to be announced on the bulletin board.

Open to all members of the University.

Faculty of Arts and Sciences. Special meeting at University 5, 4 p. m.

Boylston Chemical Club. The Detection of Food Adulteration. Mr. Harris E. Sawyer. Boylston 9, 7.30 p. m.

Open to all members of the University.

Geological Conference. Mr. C. W. Purington, "Building stones of New England;" Mr. T. A. Jaggar, "Some Experiments in Ripple-Marks;" Mr. T. W. Vaughan. "Development of Calyptrophorus." Geological Laboratory, 7.45 p. m.