16. The _Hendrick Hudson_ (Hudson River Day Line), 1906 _To face_ 50 Photograph by courtesy of the Hudson River Day Line 17. The _Robert Fulton_ (Hudson River Day Line), 1909 _To face_ 52 As the last 18. The _William M. Mills_ _To face_ 54 19. The _City of Cleveland_ _To face_ 54 Both by courtesy of the _Shipping World_ 20. Patrick Miller’s Triple Boat the _Edinburgh_ _To face_ 56 From the engraving at South Kensington 21. Model of Miller’s Double Boat _To face_ 58 From the original at South Kensington 22. The _Charlotte Dundas_: longitudinal section 60 From a drawing 23. Symington’s Original Engine of 1788 _To face_ 60 Preserved at South Kensington 24. Model of the _Charlotte Dundas_ _To face_ 62 From the original at South Kensington 25. The Original Engines of the _Comet_ _To face_ 64 Preserved at South Kensington 26. The _Comet_, 1812 _To face_ 66 27. The _Industry_, 1814 _To face_ 68 Both by courtesy of the Institute of Marine Engineers, from the lecture by J. H. Hulls, delivered Feb. 26, 1906 28. Plan and Lines of the _Comet_ _To face_ 70 29. The Engine of the _Leven_ _To face_ 70 Both by courtesy of Messrs. MacLehose and Sons and of the author, from Captain Williamson’s “Clyde Passenger Steamers” 30. The _Sea-Horse_, about 1826 _To face_ 72 By courtesy of the Institute of Marine Engineers, from the lecture by J. H. Hulls, delivered Feb. 26, 1906 31. The _Monarch_ and _Trident_, convoying the _Royal George_ Yacht, with Queen Victoria and the Prince Consort, to Edinburgh, August 1842 _To face_ 80 32. The _Trident_, in which the Queen and Prince Consort returned, Sept. 1842 _To face_ 82 Both by courtesy of the General Steam Navigation Co. 33. The _Carron_ _To face_ 84 By courtesy of the Carron Co. 34. The _Kingfisher_ _To face_ 84 By kind permission of the General Steam Navigation Co. 35. The _Fingal_ _To face_ 86 By courtesy of the London and Edinburgh Shipping Co. 36. The _Lady Wolseley_ _To face_ 86 By courtesy of the British and Irish Steam Packet Co. 37. The _Ben-my-Chree_ (I.), built 1845 _To face_ 88 38. The _Tynwald_ (I.), built 1846 _To face_ 90