170 Record of the Royal Society. 



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, 711 (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 

 scientiBc 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 manu- 

 scripts 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 Miscel- 

 laneous Manuscripts,' compiled by the late J. 0. Halliwell-Phillipps, 

 P.R.S., in 1840, which is on sale (price 2s.). Among the series 

 not there catalogued are 'The Boyle Papers,' bound in fifty- 

 three 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 sub- 

 jects. The MSS. of the ' Philosophical Transactions ' and ' Proceed- 

 ings,' 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- 



