"whether it was the intention of the Government to give effect to the recommendation of the Commissioners of the Post-office, contained in their ninth report relating to the reduction of the rates of postage, and the issuing of penny stamps?" Hill's ideas for postage stamps and charging paid-postage based on weight soon took hold, and were adopted in many countries throughout the world. With the new policy of charging by weight, using envelopes for mailing documents became the norm. Hill's brother Edwin invented a prototype envelope-making machine that folded paper into envelopes quickly enough to match the pace of the growing demand for postage stamps. Rowland Hill and the reforms he introduced to the United Kingdom postal system appear on several of its commemorative stamps. James Chalmers In the 1881 book The Penny Postage Scheme of 1837, Scotsman Patrick Chalmers claimed that his father, James Chalmers, published an essay in August 1834 describing and advocating a postage stamp, but submitted no evidence of the essay's existence. Nevertheless until he died in 1891, Patrick Chalmers campaigned to have his father recognized as the inventor of the postage stamp. The first independent evidence for Chalmers' claim is an essay, dated 8 February 1838 and received by the Post Office on 17 February 1838, in which he proposed adhesive postage stamps to the General Post Office. In this approximately 800-word document concerning methods of indicating that postage had been paid on mail he states: "Therefore, of Mr Hill's plan of a uniform rate of postage... I conceive that the most simple and economical mode... would be by Slips... in the hope that Mr Hill's plan may soon be carried into operation I would suggest that sheets of Stamped Slips should be prepared... then be rubbed over on the back with a strong solution of gum...". Chalmers' original document is now in the United Kingdom's National Postal Museum. Since Chalmers used the same postage denominations that Hill had proposed in February 1837, it is clear that he was aware of Hill's proposals, but whether he obtained a copy of Hill's booklet or simply read about it in one or both of the two detailed accounts (25 March 1837 and 20 December 1837) published in The Times is unknown. Neither article mentioned "a bit of paper just large enough to bear the stamp", so Chalmers could not have known that Hill had made such a