I suppose there are some people who would consider it unthinkable to keep it in operation.
The sugar manufacture, however, is a protected and bounty-fed industry, and the 51 sugar mills in operation in 1901 are a heavy tax upon consumers and taxpayers.
Eventually the difficulty was overcome by the device of an educational test based on the provisions of an act in operation in Natal.
On the question of how far the effects are due to conduction between the earth plates, and how far to true electromagnetic induction, authorities differ, some being of opinion that the two effects are in operation together.
This form of electric wave detector proved itself to be far more certain in operation and sensitive than anything previously invented.