31 AUGUST 1889, Page 25

Physical Realism. By Thomas Case, M.A. (Longmans and Co.) —Mr.

Case divides his Physical Realism into two parts,—" The General Proof of Physical Realism," and "Psychological Idealism." Both are interesting; the second part particularly so to the student, wherein Mr. Case examines Descartes, Locke, Berkeley and his "Vision Theory," Hume, and Kant. Berkeley, indeed, comes well out of his hands, though he is not spared by Mr. Case. Perhaps the most suggestive chapters are those on Locke, Hume, and Berkeley's "Theory of Vision." Physical Realism is clear reading, with little or no heaviness in the style to weary the ordinarily constituted philosophical reader.