In addition to the foregoing, the President and Council have determined to issue a supplementary volume, in which will be catalogued all the most important papers that have appeared from 1800 to 1883 in periodicals not hitherto indexed, and the copy for this volume is now in an advanced stage of preparation. The work for the decade 1883–94 has also made some progress. The question of a Subject Catalogue has been often considered, and the Society have actually on foot a Subject Index to the existing Catalogue. The preliminary preparation of the copy, involving the reduction of all the titles to one language, is now far advanced, and the scheme of classification is under consideration. A portion of Dr. Ludwig Mond's gift, which has been mentioned above, is devoted to this branch of the work, and in June, 1894, he supplemented this important aid by the still more munificent promise to contribute one-half of the total expenditure upon the Index in excess of that portion of his former gift already devoted to this purpose, provided the Society or others are willing to contribute the remainder of such sum (see p. 120). By this means the Index to the Catalogue will doubtless in due time become an accomplished fact, and thus the whole series from 1800 to 1883, under Authors and Subjects, be completed. And the Society looks forward to being able to continue the whole work up to the year 1900, at which date it is to be hoped that an international organization, the consideration of which was the subject of an international conference held at the instance of the Royal Society in July of last year, may take it up. THE LIBRARY. On the 2nd January, 1666-7, Mr. Henry Howard (afterwards sixth Duke of Norfolk) presented the Royal Society with "the Library of Arundel House, to dispose thereof as their property, desiring only that in case the Society should come to faile, it might return to Arundel House; and that this inscription, Ex dono Henrici Howard Norfolciensis, might be put upon every book given them." "The Society," it is added, "received this noble donation with all thankfullnesse, and ordered that Mr. Howard should be registered as a benefactor." This gift may be regarded as the nucleus of the Society's Library. A considerable part of the Arundel Library came originally from the collection of Matthias Corvinus, King of Hungary, a portion of which, after his death, passed into the possession of the celebrated Bilibald Pirckheimer, of Nuremberg, who died in 1530. This portion was purchased by Howard's grandfather, Thomas, Earl of Arundel, during his embassy at Vienna; and it consisted of a great number of printed books and many rare and valuable manuscripts.* It may be mentioned that several of the books, which are still in the Society's possession, contain Bilibald Pirckheimer's book-plate, designed by Albrecht Dürer. An entry in the Council Minutes of May 18, 1681, shows that the Arundel Library was at that time kept separate from the other books, and it probably remained so for many years. The volumes were afterwards, however, distributed according to subjects, and in process of time many were disposed of. Sales of books were made in 1713, 1745, and at subsequent dates. On June 20, 1872, the Council, on the recommendation of the Library Committee, resolved "to dispose of superfluous books from the collection of works on 'Miscellaneous Literature," and these probably included many Arundel books.' The most valuable of the printed books of purely literary interest retained by the Society were in 1883 collected together, under the superintendence of the Treasurer, Sir John Evans, in a case made for the purpose. They include a copy of Caxton's Chaucer, and two volumes, printed on vellum, by Fust and Schoeffer, named the 'Liber Sextus Decretalium cum glossis' (A.D. 1465), and Cicero's 'Officia et Paradoxa' (A.D. 1466); a very perfect example of Albrecht Dürer's 'Historia Mariæ, Passio Domini, et Apocalipsis,' in one volume (A.D. 1511); a copy of the 'Nuremburg Chronicle'; a very fine copy of Euclidis Elementa,' Editio Princeps (Venetiis. Ratdolt, 1482) with illuminated initials; a number of Editiones Principes of the Latin Classics, including many Aldines, a large collection of Luther's and of scarce Reformation tracts, and many other works of literary or typographical interest. The bulk of the Arundel Manuscripts was sold to the Trustees of the British Museum in 1830 for the sum of £3559, the proceeds being devoted to the purchase of scientific books; these Manuscripts are still kept in the British Museum as a separate collection. A catalogue of all the manuscripts and printed books originally given to the Society by Henry Howard of Norfolk was printed in 1681, and a copy of the same is in the Society's Library. The scientific books in the Library probably number about 60,000 volumes. In the purchase of books, special attention has for many years past been paid to scientific serials; and the collection of Journals and of the Transactions of Scientific Societies is now a very large The Council annually votes a sum of £400 for the purchase and binding of books. one. * Weld's 'History,' vol. 1, p. 196. A Catalogue of the Scientific Books in two octavo volumes is on sale. Part 1 (1881) containing Transactions, Journals, &c., 5s. ; Part II (1883), General Science, 15s. A reduction on these prices is made to Fellows. A List of Additions to the Library made during the year will be found in the Year-book.' The Regulations for the use of the Library are contained in Statutes, Chap. XIV, §§ 7-11 (see 'Year-book'); but the Council have under consideration the issue of more detailed Standing Orders. The books lent out are called in by order of Council usually once a year, at the beginning of the Long Vacation; and, during the month of August, no book is allowed to leave the house, though the Library is kept open for purposes of reference. Besides the printed books, the Library contains a rich collection of scientific correspondence, official records, and other manuscripts, including the original MS., with Newton's autograph corrections, from which the first edition of the Principia' was printed; the celebrated MS. volume of the Commercium Epistolicum,' relating to the Leibnitz-Newton controversy on the priority of the invention of fluxions; the MS. of John Aubrey's 'Memoires of Naturall Remarques in the County of Wilts,' written in 1685; a collection of over 300 letters by Leeuwenhoek; a collection of letters and manuscripts by Malpighi; a collection of letters by Henry Oldenburgh and Dr. J. Beale written to Robert Boyle; Henry Oldenburgh's commonplace book containing drafts of his letters to Milton and to Robert Boyle; the autograph MS. of Wallis's Treatise on Logic,' published in the folio edition of his works; a large album containing original letters, portraits, and other memorials of Joseph Priestley, collected by James Yates, &c. Many of the manuscripts and most of the MS. letters are given in the Catalogue of Miscellaneous Manuscripts,' compiled by the late J. O. Halliwell-Phillipps, F.R.S., in 1840, which is on sale (price 28.). Among the series not there catalogued are 'The Boyle Papers,' bound in fiftythree volumes, the 'Letter Books,' containing copies of the early scientific correspondence from the foundation of the Society to the end of the 17th century, the 'Register Book' of the Royal Society, containing copies of scientific memoirs communicated to the Society from 1661 to 1738, in twenty-one volumes; the 'Journal Book,' containing minutes of the Society's meetings from 1660 to the present time; the Council Minutes' from the foundation of the Society; and a series of guard-books, containing the original MSS. of early memoirs communicated to the Society, arranged under subjects. The MSS. of the Philosophical Transactions' and 'Proceedings,' and the papers read before the Society but not published, are bound into volumes and preserved for reference, as, also, are the "Certificates of Candidature," in which the qualifications of candi dates are stated, and to which the signatures of supporters are attached. All the above-mentioned MSS., and others not here specified, are open to the inspection of Fellows, but the loan of them is exclusively vested in the Council. INSTRUMENTS AND HISTORICAL RELICS IN THE POSSESSION OF THE ROYAL SOCIETY. RELICS OF SIR ISAAC NEWTON. 1. Solar Dial cut in stone, made by the hand of Sir Isaac Newton when a boy, taken out in 1844 from the wall of the Manor House at Woolsthorpe, in which he was born, and presented the same year to the Royal Society by the Rev. Chas. Turnor, F.R.S., to whose family the house belonged. 2. Two rules made of the wood of Sir Isaac Newton's apple tree at Woolsthorpe. Presented by Rev. Chas. Turnor, F.R.S. 3. Original Reflecting Telescope of Sir Isaac Newton, made with his own hands, in 1671. ( Phil. Trans.,' vol. 7. p. 4004.) Presented to the Royal Society by Messrs. Heath and Wing, Math. Inst. Makers, Strand, London; Feb. 6, 1766. 4 parts. 4. The MS. of the 'Principia,' from which the First Edition was printed, with autograph corrections by Sir Isaac Newton. 5. An autograph order, dated July 27, 1720, addressed by Sir Isaac Newton to Dr. John Francis Ffouquier, directing him to apply certain sums belonging to Newton in purchasing, on Newton's account, South Sea Stock. Presented by Dr. Wollaston, P.R.S. 6. The original mask of Newton's face, which belonged to Roubiliac, from the cast taken after death. Presented in 1839 by Prof. Hunter Christie, Sec. R.S. 7. Sir Isaac Newton's Watch. 8. A lock of Sir I. Newton's Hair. Presented by Henry Garling, Oct. 25, 1847. 9. Armchair, formerly belonging to Sir Isaac Newton. Bequeathed in 1812 to Richard Saumarez. Bequeathed to the Royal Society in 1891 by the late Mr. Thomas Kerslake, of Clevedon. OTHER RELICS AND INSTRUMENTS. 1. Air-pump, with double barrel. Presented to the Royal Society by the Hon. Robert Boyle, in 1662. 2. Sir William Petty's Double-bottomed boat. "Upon the reading of a letter, sent out of Ireland to the Secretary, con- "The Papers of the next Philosophical Transactions, having been con- |