TTE SBCREW.PROPELLER
... S. To the Editor of the Gfavolo Herald. Glasgow, 14th January, 1869. SIR,-I vwas gratified to find that tberecent letters in the Herald as to Early Steam Navigation have led Mr James Steel, ef Liverpool, to give, in your impression of the 1st instant, an interesting ac- count of a trial made by the late Mr John Wood, shipbuilder, Port-Glasgow, with a screw in the pro- pulsion of a ship's ...