Sounding the depth of the sea without a line
                                Date
                            
                            
                                30 September 1663
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Unknown, Artist
                            
                            
                        
                            
                            
                            
                                After
                            
                            
                                Robert Hooke (1635 - 1703, British) , Natural philosopher
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p94
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 365mm
width (page): 233mm
                            
                        
                            
                            
                            width (page): 233mm
                                Description
                            
                            
                                Diagram illustrating Robert Hooke's invention for sounding the sea without a long line, using instead a ball sunk to the bottom of the sea by a weight which is released as soon as it touches the sea-floor and returns to the surface.
It was discussed at the meeting of the Royal Society on 30 September 1663, and printed in Philosophical Transactions of the Royal Society, vol. 1, no. 9 (February 1666), and again in vol. 2, no. 24 (April 1667).
This is copied from RBO/2i/301 or RBO/2ii/203v. The original drawing of this apparatus by Hooke is at Cl.P/20/23/001. Other version can be found at Cl.P/20/35/002 and MS/776/483.
                            
                            
                        
                            
                            
                            It was discussed at the meeting of the Royal Society on 30 September 1663, and printed in Philosophical Transactions of the Royal Society, vol. 1, no. 9 (February 1666), and again in vol. 2, no. 24 (April 1667).
This is copied from RBO/2i/301 or RBO/2ii/203v. The original drawing of this apparatus by Hooke is at Cl.P/20/23/001. Other version can be found at Cl.P/20/35/002 and MS/776/483.
                                Object history
                            
                            
                                At the meeting of the Royal Society on 30 September 1663, ‘Mr. Hooke brought in the description of the new ways contrived by him for sounding the depth of the sea without a line, and fetching water from any depth; which were ordered to be registered’ (Birch 1:307). Text and figure printed in Birch 1:307-08. 
Printed in R. Hooke, 'Directions for observations and experiments to be made by masters of ships, pilots and other fit persons in their sea voyages', Phil. Trans. vol. 2, no. 24 (April 1667), pp. 433-48.
                            
                        
                            
                            
                        
                            
                            
                        
                    Printed in R. Hooke, 'Directions for observations and experiments to be made by masters of ships, pilots and other fit persons in their sea voyages', Phil. Trans. vol. 2, no. 24 (April 1667), pp. 433-48.