Observations of rotifers
                                Date
                            
                            
                                4 November 1704
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Unknown, Artist
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p12a
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 157mm
width (page): 140mm
                            
                        
                            
                            
                            width (page): 140mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Five figures in a letter by Antoni van Leeuwenhoek to the Royal Society.
Fig. 1: a rotifer, a tiny micro-organism that can be found on the roots of duckweed. In this drawing ABG is the little tube with which the organism attaches itself to the roots, and CDEF depicts a disc that rotates.
Fig. 2: the two wheels seen from the other side.
Fig. 3: another rotifer, where its little tube consisted of round bubbles, which had never been observed before by Leeuwenhoek.
Fig. 4: the toothed wheels of fig. 3.
Fig. 5: another similar animalcule found in the gutter water.
                            
                            
                        
                            
                            
                            Fig. 1: a rotifer, a tiny micro-organism that can be found on the roots of duckweed. In this drawing ABG is the little tube with which the organism attaches itself to the roots, and CDEF depicts a disc that rotates.
Fig. 2: the two wheels seen from the other side.
Fig. 3: another rotifer, where its little tube consisted of round bubbles, which had never been observed before by Leeuwenhoek.
Fig. 4: the toothed wheels of fig. 3.
Fig. 5: another similar animalcule found in the gutter water.
                                Object history
                            
                            
                                The Journal Book mentions on 6 December 1704, 'A Letter was Read from Mr Leeuwenhoeck concerning several Animalculae. Observed in Water. He was Order'd to be thanked' (JBO/11/59).
Printed as A. Leeuwenhoek, ‘Animalcula on the Roots of Duck-Weed’, Phil. Trans. vol. 24, no. 295 (January 1705), pp. 1784-93, figs 1-5.
                            
                        
                            
                            
                            Printed as A. Leeuwenhoek, ‘Animalcula on the Roots of Duck-Weed’, Phil. Trans. vol. 24, no. 295 (January 1705), pp. 1784-93, figs 1-5.
                                Related fellows
                            
                            
                                Antoni van Leeuwenhoek (1632 - 1723, Dutch) , Naturalist
                            
                            
                        
                            
                            
                            
                                Associated place