THE CROONIAN LECTURE 221 



1830 to 1850. Not appointed. 



1851. Richard Owen. 



' On the Megatherium.' Proceedings, vol. 6. 



1852 to 1856. Not appointed. 



1857. James Paget. 



' On the Cause of the Rhythmic Action of the Heart.' Proceedings, vol. 8. 



1858. Thomas Henry Huxley. 



' On the Theory of the Vertebrate Skull.' Proceedings, vol. 9. 



1859. Not appointed. 



1860. James Bell Pettigrew. 



' On the Arrangement of the Muscular Fibres of the Ventricular Portion of 

 the Heart of the Mammal.' Proceedings, vol. 10 ; Phil. Trans., 1864. 



1861. Charles Edouard Brown-Sequard. 



' On the Relations between Muscular Irritability, Cadaveric Rigidity, and 

 Putrefaction.' Proceedings, vol. 11. 



1862. Albert Kolliker. 



' On the Termination of Nerves in Muscles, as observed in the Frog : and on 

 the disposition of the Nerves in the Frog's Heart.' Proceedings, .vol. 12. 



1863. Joseph Lister. 



' On the Coagulation of the Blood.' Proceedings, vol. 12. 



1864. Hermann Helmholtz. 



' On the Normal Motions of the Human Eye in relation to Binocular Vision.' 



Proceedings, vol. 13. 



1865. Lionel S. Beale. 



' On the ultimate Nerve-fibres distributed to Muscle and some other Tissues, 

 with Observations upon the Structure and probable Mode of Action of a 

 Nervous Mechanism.' Proceedings, vol. 14. 



1866. Not appointed. 



1867. J. S. Burdon Sanderson. 



' On the Influence exercised by the Movements of Respiration on the 

 Circulation of the Blood.' Phil. Trans., vol. 157. 



1868. Not appointed. 



1869. Not appointed. 



1870. Augustus V. Waller. 



' On the Results of the Method, introduced by the Author, of investigating 

 the Nervous System, more especially as applied to the Elucidation of the 

 Functions of the Pneumogastric and Sympathetic Nerves in Man.' 



Proceedings', vol. 18. 



1871 and 1872. Not appointed. 



1873. Benjamin Ward Richardson. 



' On Muscular Irritability after Systemic Death.' Proceedings, vol. 21. 



