40 RECORD OF THE ROYAL SOCIETY 



the respective Secretaries ' (being, in fact, in the first instance a 

 speculation on the part of Henry Oldenburg), though a certain 

 supervision was exercised by the President and Council. This 

 system was continued through 46 volumes consisting of 496 

 numbers. With the 47th volume, published in 1753 (the pub- 

 lication in numbers was thenceforward discontinued) , the publica- 

 tion was placed by new Statutes directly in the hands of the 

 President and Council, a Committee of Papers being established. 

 In addition to the Philosophical Transactions, the Society, 

 having powers by its Charter to appoint a printer and engraver, 

 published or sanctioned the publication of separate works on 

 natural knowledge. Among the works which received its 

 imprimatur are the following : 



Hooke, Robert, ' Micrographia : or some Physiological Descriptions of 



Minute Bodies made by Magnifying Glasses. 1 Folio. London 1665. 

 Graunt, John, ' Natural and political Observations . . . made upon the Bills 

 of Mortality, with reference to the Government, Religion, Trade, Growth, 

 Air, Diseases, and the several changes of the City [of London]. 1 (3rd 

 edition, enlarged.) 8vo. London 1665. 

 Sprat, Thomas, ' The History of the Royal-Society of London, for the 



Improving of Natural Knowledge.' 4to. London 1667. 

 Malpighi, Marcello, 4 Dissertatio epistolica de Bombyce ; Societati Regiae 



Londini dicata.' 4to. Londini 1669. 

 Holder, William, ' Elements of Speech ; with an Appendix, concerning 



Persons Deaf and Dumb.' 8vo. London 1669. 



Evelyn, John, * Sylva, or a Discourse of Forest Trees.' Folio. London 1670. 

 Horrocks, Jeremiah, * Opera [Astronomica] posthuma.' 4to. Londini 1673. 

 Malpighi, Marcello, * Anatome Plantarum.' Folio. Londini 1675. 

 Willughby, Francis, ' Ornithologiae libri tres ; totum opus recognovit, 



digessit, supple vit Joannes Raius.' Folio. Londini 1676. 

 Evelyn, John, ' A Philosophical Discourse of Earth, relating to the Culture 



and Improvement of it for Vegetation . . .' 8vo. London 1676. 

 'Philosophical Collections' [by Robert Hooke]. 1 4to. London 1679-82. 

 ' Lectiones Cutlerianae, or a Collection of Lectures : Physical, Mechanical, 



Geographical, and Astronomical . . .' 4to. London 1679. 

 Also several separate Tracts, by Robert Hooke. 4to. 1679-82. 

 Papin, Denis, 4 A New Digester, or Engine for softning Bones.' 4to. 

 London 1681. 



1 ' Ordered and desired That Mr. Hooke may publish (as he hath now declared he is 

 ready to doe) a sheet or two every fortnight of such Phylosophicall matters as he shall 

 meet with from his Correspond 18 , not making use of any thing conteind in the Register 

 Books without the leave of the Councel and Author.' Council Minutes, July 3, 1679. 



