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Scientific American, Vol. 97, No. 10 (September 1907) (1907)

leaf 3

An illustration from Scientific American, Vol. 97, No. 10 (September 1907), 1907, leaf 3
as hallu- a large conical cinations, emo- pendulum, tions, the which is ac- thoughts of the celerated above insane, etc., its knife-edge is possible. suspension by These then, an automatic- namely, statis- al 1 y - wound tics, measure- train, the driv- ments, and ex- ing force being periments, are… … The driving struments de- Apparatus for Mapping the Blind Spots of A Sonometer to Detect the Least Perceptible Differ* vised and util- train is provid- the Eye. ence in the Intensity of Sound. ed with four ized by psychol- black-enameled ogists for es- MODERN EXPERIMENTAL PSYCHOLOGY—ITS METHODS AND…

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