We talked a long time about these strange fancies, and finally I said to Professor Bell:

“But on this principle of brain tickling, what is to prevent a blind man from seeing by electricity?”

“I do not know that there is anything to prevent it.”

FROM TENNYSON’S “LOCKSLEY HALL”.

For I dipt into the future, far as human eye could see,

Saw the Vision of the world, and all the wonder that would be;

Saw the heavens fill with commerce, argosies of magic sails,

Pilots of the purple twilight, dropping down with costly bales;

Heard the heavens fill with shouting, and there rain’d a ghastly dew