12 



You will observe therefore, in conclusion, gentlemen, that I 

 claim the invention as well as the construction of the machine 

 which was furnished to Mr. Gobrecht in 1817, and also that I 

 was the first to adapt the Rose Engine appendage to the ruling 

 of waved lines by it, in which this art originated. I never claim- 

 ed to be the first to use it or discover its use for copying medals. 

 Indeed for two years after its construction, I was ignorant, in 

 common with others, of the mode in which this was done, al- 

 though I discovered it, as I have already stated in my first com- 

 munication, immediately on using the machine myself. 



I might then if I had not been too much immersed in my 

 professional concerns, and too reluctant to engage in controversy, 

 easily have established beyond contradiction, every fact which I 

 have here asserted. I hope I have convinced you of the mistake 

 into which you have fallen. It cannot seem strange that I should 

 be mortified, if in such a standard work as yours, an error so un- 

 just to me should remain uncorrected. 







Your obedient servant, 





Asa Spencer. 



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