The screw-propeller vs. the paddle-wheel for marine propulsion.

Hydraulic propulsion by reaction consists, in principle, in effecting a movement of boats, by sucking in water at the bow and forcing it out at the stern.

Just as the perfection of the gasoline motor spurred on the inventors to adapt the steam-engine for use in automobiles, so the inventors of the storage battery, which is the heart of an electric carriage, were stirred up to make electric propulsion practical.

Crusoe sprang from the bank with such impetus that his broad chest ploughed up the water like the bow of a boat, and the energetic workings of his muscles were indicated by the force of each successive propulsion as he shot ahead.

I set to with an unconquerable propulsion to write, with a lamentable want of what to write.

He mounted the seat, on his first essay alone, with the jauntiness becoming a master of vehicular propulsion.

In an affidavit made in March, 1845, he states that in 1833 his attention was particularly called to the subject of oblique propulsion, and that under his direction propellers of various patterns and embodying these principles were fitted on a canal-boat named the "Francis," and later in 1834 to another called the "Annatorius."