Letter from Charles Folson, Corresponding Secretary of the American Academy of Arts and Sciences, Boston, to William Henry Smyth, Foreign Secretary of the Royal Society Giving an affirmative response to the Society's invitation to the Academy to establish and exhcange a variety of magnetical and meteorlogical observations. These will likely take place at the newly erected building at Harvard University in Cambridge, Massachusetts, with observations made by [Joseph] Lovering and [William Cranch] Bond. 22 April 1840