嗅覚に関する研究—第4報 余等の嗅覚計に依る圧力の閾値上刺激に就いて

　I．緒言

　余等は先に第1報（日．耳．会．第61巻，11号）に於いて，余等の嗅覚計と正常者嗅覚に於ける「圧に関する最小刺激閾値」に就いて，正常値並びに日差に依る変動を報告したが，今回は更に圧に関しての閾値上刺激に就いて実験を進め二，三の知見を得たので報告する。

　The study on the sense of smell is continued. The threshold value on the stimulus of sense of smell is obtained on test persons 4 males and 3 females normal in health. The means by which such a stimulus is carried to the olfactory area namely the amount of air and the pressure to be maintained were changed. Under such conditions no change was noted among any individual of the test in his or her sense of smell.