ORIGINAL WORK OF THE PROFESSORS 



THOMAS YOUNG, 



Professor Royal Institution from 1801 to 1803. 



Interference of Light. Undulatory Theory of Light. Sound. Colours of Thin 

 Plates. " Lectures on Natural Philosophy and the Mechanical Arts (including a 

 Catalogue of Works relating to these subjects) " 1807. 



HUMPHRY DAVY, 



Professor Royal Institution from 1802 to 1813; Honorary Professor from 



1813 to 1823. 



Galvanic and Electro-Magnetic Phenomena. Chemical Action of the 

 Voltaic Battery. Discoveries in Electro-Chemical Science. Lectures on Agri- 

 cultural Chemistry. Decomposition of Potash. Isolation of Potassium and 

 Sodium. Chlorine. Discourse on Radiant or Ethereal Matter. Iodine. Re- 

 searches on Fire-damp and Flame. The Safety Lamp. 



Historical Apparatus of Davy In the Royal Institution 



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