why are anode rays called positive rays?

Why were anode rays also called as “canal rays' ?

A : The charge to mass ratio of the particles anode rays depends on nature of gas taken the discharge tube . R : The particles of anode rays carry positive charge

A : The charge to mass ratio of the particles anode rays depends on nature of gas taken the discharge tube . R : The particles of anode rays carry positive charge

Canal rays are positively charged.

If S_1 be the specific charge of cathode rays and S_2 be that of positive rays then

The nature of anode rays depends on