↑ Marie Boas, Robert Boyle and Seventeenth-century Chemistry, CUP Archive, 1958, p. 43.
↑ Newton, Isaac (February 1678). Philosophical tract from Mr Isaac Newton. Cambridge University. But because I am indebted to you & yesterday met with a friend Mr Maulyverer, who told me he was going to London & intended to give you the trouble of a visit, I could not forbear to take the opportunity of conveying this to you by him.
