submarine, wrapped in burlap, and padded, to keep it from rusting.
"Now," said Tom to himself, as he mixed two kinds of acid in a jar, to produce a new sort of electrical current, "I will see if this is any better than the first way in which I did it."
He was careful about pouring out the powerful stuff, but, in spite of this, he spilled a drop on his finger. It burned like fire, and, instinctively, he jerked his hand back.
The next instant there was a series of happenings. Tom's elbow came in contact with another jar of acid, knocking it over, and spilling it into the retort where he had been mixing the first two liquids. There was a hissing sound, as the acids combined, and a thick, white vapor arose, puffing into Tom's face, and making him gasp.
He staggered back, brushed against the heavy iron shaft in the corner, and it fell sideways against him, knocking him to the floor, and dropping across his thighs. The padding on it saved him from broken bones, but the shaft was so heavy, that after it was on him, Tom could not move. He was held fast on the floor of his shop, unable to use his legs, and prevented from getting up.
