Theory of harmony
                                Date
                            
                            
                                14 May 1664
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p155
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 307mm
width (page): 190mm
                            
                        
                            
                            
                            width (page): 190mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Figures illustrating proportions of harmony in John Wallis's letter to Henry Oldenburg dated 14 May 1664. It was read at the meeting of the Royal Society on 18 May 1664.
The diagrams in the original letter are at EL/W1/8/002.
                            
                            
                        
                            
                            
                            The diagrams in the original letter are at EL/W1/8/002.
                                Object history
                            
                            
                                At the meeting of the Royal Society on 18 May 1664, ‘The secretary produced two letters written to him from Oxford by Dr. Wallis, one of May 7 1664, and the other of May 14, containing his thoughts upon the musical proposals of Mr. Berchensha. It was ordered, that these letters should be referred to the president to peruse and consider them, and to make report thereof to the society; and that Dr. Cotton should be added to the musical committee appointed April 20, 1664’ (Birch 1:425-26).  
John Birchensha’s paper on music had been read earlier on 27 April 1664, ‘wherein he gave an account of the desiderata of music, and undertook to bring the art of music to that perfection that even those, who could neither sing nor play, should be able, by his rules, to make good airs, and compose two, three, or more parts artificially’ (Birch 1:418).
                            
                        
                            
                            
                            John Birchensha’s paper on music had been read earlier on 27 April 1664, ‘wherein he gave an account of the desiderata of music, and undertook to bring the art of music to that perfection that even those, who could neither sing nor play, should be able, by his rules, to make good airs, and compose two, three, or more parts artificially’ (Birch 1:418).
                                Related fellows
                            
                            
                                John Wallis (1650, British) , Mathematician
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
                            
                        
                            
                            
                            Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
                                Associated place