Letters written by Sir William Temple, during his being ambassador at The Hague, : to the Earl of Arlington and Sir John Trevor, Secretaries of State to K. Charles II. VVherein are discovered many secrets hitherto concealed. Publish'd from the originals, under Sir William Temple's own hand: and dedicated to the Right Honourable Sir Thomas Littleton, Speaker of the House of Commons. By D. Jones, Gent.