Mr. Johnson's Last Lecture at 4.30

Mr. Woolsey McA. Johnson will deliver the last of his series of three lectures on "Some Applications of Physical Chemistry to Metallurgy" in the Lecture Room of the Rotch Building, this afternoon at 4.30 o'clock. His special topic will be "The Metallurgy of Tin and Copper."

The lecture will be open to the public, and students from the Massachusetts Institute of Technology are especially invited to attend.