The Duke of Wellington presents his compliments to Mr. Cox, and has received his letter and the work referred to: he is much obliged to Mr. Cox for the communication. * * * * * Copy of a Letter to FREDERICK TYRELL, Esq. SIR,—The advertisement enclosed frequently appears in the daily and weekly newspapers, to which, as your name is attached, I beg to direct your attention, and solicit an answer to the following questions at your earliest convenience. 1st.—Have you proved the superior efficacy of the Spectacles, (as stated in the advertisement), and consider they merit your unqualified approbation? 2nd.—Will you oblige me by stating what peculiar advantages you consider them to possess over the usual Spectacles, manufactured by the London opticians? 3rd.—Does your approval extend to all the Spectacles sold by the advertiser, or to those which he designates Amber Spectacles only? I remain, Sir, yours obediently, GEORGE COX. To Frederick Tyrell, Esq. * * * * * Mr. TYRELL’S Reply. _17, New Bridge Street, Blackfriars._ _January 29th, 1838._ SIR,—In reply to your letter respecting Mr. —— I have to state, First, That I am not acquainted with any institution which is designated “The Royal Eye Infirmary,” to which he states that he is optician. The Royal Ophthalmic Hospital, in Moorfields, is sometimes so called, but Mr. —— is not optician to that institution. Secondly, That Mr. —— has not any permission from me to make use of my name in advertisements, as approving of any glass, spectacles, or other articles he may either manufacture or sell. And thirdly, That I do _not_ consider his glasses to be in any respect superior to those manufactured by other persons in the trade. You are at liberty to make use of this communication in any way you deem proper to counteract Mr. ——’s advertisements. I remain yours respectfully, FREDERICK TYRELL. To Mr. George Cox. * * * * * J. Hodson, Esq., consulting Oculist to the Eye Infirmary, Birmingham, resolved upon coming to London to give me his disclaimer, rather than incur any chance of misrepresentation from an unjustifiable use being made of his signature, he being an entire stranger to me before I addressed him upon this subject.