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140 PHILOSOPHICAL PERIODICALS. modern methods of philosophical and scientific investigation, whilst his adversaries maintain that these must be followed on parallel lines and equally with metaphysical studies. The writer does not sympathise with Father Diego.] Schmidlin. ' Die Philosophic Ottos von Freising.' [This, the sequel and conclusion of a paper on a German mediaeval phil- osopher, examines Freising's ontological and cosmological speculations, and points out especially what connexion they have with those of Gilbert de la Poree and the Fathers of the Church.] Dyroff. ' Das Selbstbe- wusstsein.' [This paper is a series of remarks intended to complete the writer's previous arguments on the same subject in the Jahrbuch, by which he strives to show that self-consciousness proves the existence of a real ego.]