Not an intermitting spring!
In the primary circuit of the induction coil was an arrangement for rapidly intermitting the current and a key for short-circuiting this primary circuit.
These, without intermitting the work of reformation, endeavoured by every means to further the outward expansion of Catholicism.
It gave no effects when the same magnetic poles or the contrary poles were on opposite sides (as respects the course of the polarized ray), nor when the same poles were on the same side either with the constant or intermitting current.