VARIOUS EFFECTS OF LIGHTNING.

Dr. Hibbert tells us that upon the western coast of Scotland and

Ireland, Lightning coöperates with the violence of the storm in

shattering solid rocks, and heaping them in piles of enormous

fragments, both on dry land and beneath the water.

Euler informs us, in his _Letters to a German Princess_, that he

corresponded with a Moravian priest named Divisch, who assured him

that he had averted during a whole summer every thunderstorm which

threatened his own habitation and the neighbourhood, by means of a

machine constructed upon the principles of electricity; that the

machinery sensibly attracted the clouds, and constrained them to

descend quietly in a distillation, without any but a very distant

thunderclap. Euler assures us that “the fact is undoubted, and

confirmed by irresistible proof.”

About the year 1811, in the village of Phillipsthal, in Eastern

Prussia, an attempt was made to split an immense stone into a multitude

of pieces by means of lightning. A bar of iron, in the form of a

conductor, was previously fixed to the stone; and the experiment was

attended with complete success; for during the very first thunderstorm

the lightning burst the stone without displacing it.

The celebrated Duhamel du Monceau says, that lightning, unaccompanied

by thunder, wind, or rain, has the property of breaking oat-stalks. The

farmers are acquainted with this effect, and say that the lightning

breaks down the oats. This is a well-received opinion with the farmers

in Devonshire.

Lightning has in some cases the property of reducing solid bodies to

ashes, or to pulverisation,--even the human body,--without there being

any signs of heat. The effects of lightning on paralysis are very

remarkable, in some cases curing, in others causing, that disease.

The returning stroke of lightning is well known to be due to the

restoration of the natural electric state, after it has been disturbed

by induction.

Curiosities of Science, Past and Present A Book for Old and Young · 第 341 / 469 题