Prof. W. T. THISELTON DYER, B.A. B.SC. Form and Habit in Flowering Plants.
Mr. J. N. LOCKYER, F.R.S. Spectrum Analysis.
Prof. MICHAEL POSTER, M.D. Protoplasm and the Cell Theory.
Prof. W. STANLEY JEVONS. The Logic of Statistics.
Dr. H. CHARLTON BASTIAN, M.D. F.R.S. The Brain as an Organ of Mind.
Prof. A. C. RAMSAY, LL.D. F.R.S. Earth Sculpture: Hills, Valleys, Mountains, Plains, Rivers, Lakes; how they were Produced, and how they have been Destroyed.
Prof. RUDOLPH VIRCHOW, (University of Berlin.) Morbid Physiological Action.
Prof. CLAUDE BERNARD, (College of France.) Physical and Metaphysical Phenomena of Life.
Prof. A. QUETELET, (Brussels Acad. of Sciences.) Social Physics.
Prof. H. SAINTE-CLAIRE DEVILLE. An Introduction to General Chemistry.