Faraday to Willem Vrolik   25 May 1849¹

Royal Institution - London | 25, May 1849.

Sir

I have the honor to acknowledge the receipt of your letter of the 16th instant² and beg you will do me the favour to express the high sense I entertain of the approbation of the Royal Institute and the mark of honor it has conferred upon me for which I am most grateful and beg to return for it my sincere thanks. I can only say, under a consciousness of failing powers with increasing years, that if any thing could make me increase my exertions in the cause of science it would be such approval as that you give me[.]

Permit me to offer for yourself personally the expression of my highest esteem & respect and believe me to be

Sir | Your Most faithful & Obedient Servant | M. Faraday

M. W. Wolik [sic] | &c &c &c &c