Aerious meaning

1993, Heinrich Cornelius Agrippa von Nettesheim, James Freake (translat), Donald Tyson (edit), Three Books of Occult Philosophy, page 336,

Singing can do more than the sound of an instrument, in as much as it arising from an harmonical consent, from the conceit of the mind and imperious affection of the phantasy[imagination] and heart, easily penetrateth by motion, with the refracted and well tempered air, the aerious spirit of the hearer, which is the bond of soul and body; and transferring the affection and mind of the singer with it, it moveth the affection of the hearer by his affection, and the hearer's phantasy by his phantasy, and mind by his mind, and striketh the mind, and striketh the heart, and pierceth even to the inwards of the soul, and by little and little, infuseth even dispositions: moreover it moveth and stoppeth the members and humours of the body.