Accordingly, as the earth rotates, a district in which Hertzian waves are being propagated is brought, towards the time of sunrise, into a position in which the atmosphere begins to be ionised, although far from as freely as is the case during the hours of bright sunshine.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
We now speak of the salt as "ionised."
"The Birth-Time of the World and Other Scientific Essays"
J. (John) Joly
Such electrified atoms are absent from the sugar solution: sugar does not become "ionised" when it is dissolved.
"The Birth-Time of the World and Other Scientific Essays"
J. (John) Joly