Pumped full of air, the rubber bag, or rather cushion, exhibited a thickness of about six inches.

It looked a little like a life preserver; the more since there was a hole in the center, albeit the hole was no wider than an inch across.

The rubber bag or cushion was extremely light, the material being twice the weight of that employed in the making of toy balloons.

Inflated and considered as a raft, the rubber cushion would support a weight of twenty pounds, and draw no more than three inches of water in so doing.
"Storri bought four thousand of these from the Goodyear Company," vouchsafed Inspector Val; "had them made after patterns of his own.

A mighty tidy invention, take my word for it!" and the eye of Inspector Val glanced approval of the circular rubber raft.