ii APPENDIX. 



edged. I had no further conversation with him on the subject, and, probably^ 

 should not have recurred to it again, but for his communication to you. En- 

 closed 1 send you the certificates of Captains Dickerson of the ship Roman^ 

 and Gardener of the ship Spartan, and the first and second officers of the George 

 Clinton, \(rhich, I presume, will be sufficient to satisfy you of the correct- 

 ness of my statement. My absence from New York, (having left the very 

 day of the date of Captain Marshall's communication to you,) has prevented 

 me from noticing it before this. 



Yours respectfully, 



Edward B. Rawsom-. 



CERTIFICATES. 



NO I. 



1 hereby certify, that I have examined a plate in the American Journal of 

 January, 1S28, purporting to be the copy of a plan of a temporary Rudder 

 fitted to the ship Britannia, and that it is a fac simile of a Rudder invented by 

 Captain Edward B. Rawson, first fitted to the ship George Clinton, on a pas- 

 sage from Liverpool, in September, 1826, more than twelve months before the 

 Britannia lost her rudder, and some months before the Britannia was built. 



Alexander Riddell, 



Acting first officer of the 



George Clinton, at the time the 

 September 20, 1828. Rudder was first indented,' 



NO. II. 



I hereby certify that on the arrival of the Britannia in New York, in No- 

 vember, 1827, I examined a temporary Rudder, then fitted to said ship, and 

 found it the same in every respect, with a temporary Rudder invented by 

 Captain E. B. Rawson, and fitted to ship George Chnton, in September, 1826, 

 in Long. 45, Lat. 42 30, and I also certify that I assisted in hanging the last 

 mentioned Rudder to the George Clinton. 



James B. Cornweh,, 

 Second officer. 

 New York, Oct. 2d, 1828. Ship George Clinton. 



NO. III. 



CAPtAIN RaWSON. 



Sir — Having seen a publication in the American Journal of Science and 

 Arts, of the plan and fixtures of a Rudder on board of the Ship Britannia, I 

 find the plan the same as I saw on board of the Ship George Clinton, you com- 

 manded, twelve months before the one fitted to the Britannia, with the excep- 

 tion of an extra guy. There was no other difference in the construction of 

 the two Rudders, as I examined them both, when they were fitted to both 

 ships. Yours very respectfully, 



Jeremiah J. Dickinson, 



September Sd, 1828. Master of Ship Roman. 



