A Series of twenty-two lectures descriptive in untechnical language of the achievements in Science, Philosophy and Art, and indicating the present status of these subjects as concepts of human knowledge, are being delivered at Columbia University, during the academic year 1907-1908, by various professors chosen to represent the several departments of instruction.

MATHEMATICS, by Cassius Jackson Keyser, Adrain Professor of Mathematics.

PHYSICS, by Ernest Fox Nichols, Professor of Experimental Physics.

CHEMISTRY, by Charles F. Chandler, Professor of Chemistry.

ASTRONOMY, by Harold Jacoby, Rutherfurd Professor of Astronomy.

GEOLOGY, by James Furman Kemp. Professor of Geology.

BIOLOGY, by Edmund B. Wilson, Professor of Zoology.

PHYSIOLOGY, by Frederic S. Lee, Professor of Physiology.

BOTANY, by Herbert Maule Richards, Professor of Botany.

ZOOLOGY, by Henry E. Crampton, Professor of Zoology.