APPENDIX. 



Reclamation, certificates and correspondence respecting the invention 

 of the temporary rudder, described in this Journal, Vol. XIII. 

 p. 371. 



REMARKS. 



It will be perceived, by the dates of the subsequent letters, that this cor- 

 respondence has been, some time, in my hands. I had hoped to bring about a 

 friendly understanding between the parties, without calling the public atten- 

 tion to the controversy : or, at most, to have given only the result in the Journal. 

 With this view, in my answer to Captain Rawson's first letter, I enclosed au 

 open letter to Captain Marshall, requesting that the gentlemen would, in a 

 friendly meeting, discuss and settle their respective claims, and communicate 

 their decision for publication in the Journal. As they are both much abroad, 

 and as their being in port, at the same time, is quite accidental ; I have, in the 

 hope of an accommodation between them, still delayed, (perhaps longer than 

 strict duty would permit:) but my apology is founded, upon my great reluc- 

 tance to admit personal controversy into a Journal of Science. Justice, however, 

 seems to forbid further delay, and that the subscribers to the Journal may not 

 have cause of complaint, I have caused the correspondence, (of which, and the 

 certificates, it seemed scarcely possible to give a satisfactory abridgement,) to be 

 printed separately, and appended to the Journal without forming a part of the 

 volume. B. S. 



New Haven, June 18, 1829. 



New York, October 14, 182S. 



TO THE EDITOR. 



Dear Sir — In looking over your Journal for January 1828, 1 was not a little 

 surprised at seeing a pian of a temporary rudder, communicated to you by 

 Captain Marshall, of the ship Britannia, as one of his invention : as the plan 

 was one of my own, and Captain Marshall made no mention in his communi- 

 cation of having borrowed it, you will oblige me by giving the following state- 

 ment an insertion in your Journal. 



On the 26th of September, 1826, on my passage from Liverpool to New- 

 York, in Lat. 42 30, Long. 45 10, in the Ship George Clinton ; in a violent 

 gale I lost my rudder, and after having made one on the plan of Purnell, which 

 did not answer in steering the ship, I then made one on the plan which Cap- 

 tain Mai'shall has communicated to you, which was the first of the kind, I be- 

 lieve, that was ever made. On my arrival in New York, Captain Marshall, 

 with many gentlemen, examined it, and I explained to him particularly the 

 plan of it. Twelve months after, when Captain Marshall arrived in New- 

 York after his disaster, I called on board the Britannia to look at his rudder, 

 and observed to him, that it was on the same plan as mine^ which he acknowl- 



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