l68 LETTERS FROM THE REV. WM. DERHAM, D.D, May 8, 1704. Sr I have here sent you your vol : of Transactions wch I last borrowed, & Scilla's Epist : I return you many thanks for them, & beg that you will be pleased to add to the favour the lent of the next vol : of Trans : I have sent you the last Transaction : & all the rest that I have shall be at your comand, or any other book yt I have. And yt you may know what Books I have, I will show you in a short time a catalogue of the small number I have of Books Mathematical & of Natural Philosophy. I have also presumed to trouble you wth a few Plants, to desire the favour of you to tell me their names ; because some of them I doubt of, others I have forgotten, & some I never knew. Be pleased to write their name on the paper they ly in, & excuse this trouble given you by Sr Your much obliged & most humble servt W. Derham. I beg the favour of my humble service to your lady, son & the young Ladies. If you have any of Dr. Wallis's Books, de Motu, I desire to borrow them a little while. The Doctor in asking for Scilla's Epist was probably referring to a work of Augustine Scilla's published in 1697. Note the use of the word "lent" where we should now say "loan." The Rev. Dr. John Wallis, 1616-1703, was one of the earliest members of the Royal Society ; he was an eminent divine and mathematician and a most prolific writer. De Motu is the title of the first part of Sir Isaac Newton's great work, the Principia. May 11. 1704. Sr. As I was this day viewing the sun, I perceived a bright golden spot on his Disk, which whether it ever appeared in Schemer's time, is what I want to search after, & therefore desire the favour of borrowing Schemer of you. I have sent you the Proposals for Mr. Ray's Book, which is now finished, all or very little being to be printed but the title-page. I spake to Mr. Smith about the Subscriptions, who promised me yt either I, or any friend of mine, should have the benefit of ye 7th book. But I believe any other person might have the same benefit, although the Book I hear is admirable. But he said y the Subscription-money must be paid very shortly before the Book is published. I thought fit to advertise you of this because you told me your intent of being a Subscriber. I was yesterday at London, where I saw Wilson's Microscopes : which are really very admirable, & I judge exceed all besides. The Author will be with me, wth a set of them about a fortnight or 3 weeks hence, & if I could hope for ye favour of your good company, I would send you word yt you might have the pleasure of seeing them, & what they represent as well as I. A slice of