Mr. Johnson on Metallurgy at 4.30

Mr. Woolsey McA. Johnson of New York will deliver the first of his second series of lectures on "Some Applications of Physical Chemistry to Metallurgy" in the Lecture Room of the Rotch Building at 4.30 o'clock this afternoon. His special topic will be "Electrolytic Refining of Metals."

Mr. Johnson delivered his first series of lectures, on the same subject, in the Rotch Building two weeks ago. The two remaining lectures of the series will be given tomorrow and Wednesday at the same time and place. The lectures are open to the public, and students from the Massachusetts Institute of Technology are especially invited to attend.