The Gallego-Castilian Court Lyrics of the 14th and 15th Centuries. By HENRY R. LANG, Ph.D., Professor of Romance Philology. 10s. 6d. net.

Chapters on Greek Metric. By THOMAS DWIGHT GOODELL, Ph.D., Professor of Greek. 8vo. 8s. 6d. net.

On Principles and Methods in Syntax, with special reference to Latin. By E.P. MORRIS, M.A., Professor of Latin. 8s. 6d. net.

The Conjunction Quod in Republican Latin. A Contribution to Latin Syntax and Semasiology. By J.W.D. INGERSOLL, Ph.D., Assistant Professor of Latin.

Five Linguistic Lectures Introductory to the Scientific Study Of Language. By HANNS OERTEL, Ph.D., Professor of Linguistics and Comparative Philology. 12s. 6d. net.

The Elements of Experimental Phonetics. By EDWARD W. SCRIPTURE, Ph.D., Assistant Professor of Experimental Psychology. 21s. net.

Elementary Principles in Statistical Mechanics, developed with especial reference to the rational foundation of Thermodynamics. By J. WILLARD GIBBS, Ph.D., LL.D., Professor of Mathematical Physics, 10s. 6d. net.

A Short Treatise on Vector Analysis. Founded upon Lectures by Professor J. WILLARD GIBBS. Edited, with copious examples, by EDWIN BIDWELL WILSON, B.A., Instructor in Mathematics. 17s. net.

Light. By CHARLES S. HASTINGS, Ph.D., Professor of Physics. 8vo. 8s. 6d. net.

The Mechanics Of Engineering. Vol. I., Kinematics, Statics, and Kinetics. By A.J. DuBois, C.E., Ph.D., Professor of Civil Engineering.