LIFE-PRESERVING AND SWIMMING APPARATUS
... A new and singular kind of invention for this purpose was lately exhibited at the Society of Arts, and is now to be seen at the Polytechnic Institution, the invention of Mr. John Keyse, of Crosby-row, Walworth. The principle of it is to give the sustaining power to the extremities, instead of to the body, as hitherto the object of other inven- tions for the same purpose. The apparatus consists ...