Machine for exhausting the air by the descent of quicksilver
                                Date
                            
                            
                                8 May 1712
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Unknown, Artist
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p306
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 366mm
width (page): 231mm
                            
                        
                            
                            
                            width (page): 231mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Content object
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                At the meeting of the Royal Society on 8 May 1712, Francis Hauksbee the Younger offered a ‘description and draught’ of a new form of airpump, which was a modified version used at the Florentine Academy of Experiments. But the minutes of the meeting indicate that the description was ‘difficult to understand without a design’ and was omitted. The design of the instrument was subsequently supplied, as it is entered here in the Register Book for the same date. It appears that the clerk did not leave enough room to complete the transcription before he had begun the next entry, as the last part of the text is crammed into the lower half of the page.
                            
                            
                        
                            
                            
                            
                                Object history
                            
                            
                                8 May 1712, 'Mr Fra: Hauksbee Jun. offer'd the Description and Draught of a New Engine to evacuate a Receiver of Air, somewhat after the manner that the Florentine Experiments were made, by the Descent of Mercury from a Glass Vessell. The Description being difficult to understand without a Design it is here omitted. He had the Thanks of the Society for this communication' (JBO/11/ 292).
                            
                            
                        
                            
                            
                            
                                Associated place