CHAPTER XII

EXAMINATION OF FULTON’S DESIGN 146 What the Nautilus accomplished. The British design compared with that of the Nautilus. Folding propeller. Horizontal propeller. Details of machinery. Effectiveness of the vessel. Screening the Channel.

LIST OF ILLUSTRATIONS

Robert Fulton (self-portrait) _Frontispiece_

TO FACE PAGE Title page of “Report on the Canal between the Rivers Heyl and Helford” 8

Jonathan Hulls’ Steamboat, 1737 16

de Son’s Underwater Boat, 1653 18

Fulton’s “Nautilus,” 1798 26

Manuscript page of “Drawings and Descriptions” with Fulton’s signature 54

Manuscript page from “Drawings and Descriptions” 56

Fulton’s Drawings of Submarine: Plate the First 60 Plate the Second 61 Plate the Third 62 Plate the Fourth 63 Plate the Fifth 64 Plate the Sixth 65 Plate the Seventh 66 Plate the Eighth 68 Plate the Ninth 70 Plate the Tenth 72 Plate the Eleventh 74 Plate the Twelfth 76

Compressed Air Cylinder 76

ROBERT FULTON AND THE SUBMARINE