368 THE EOYAL INSTITUTION. [CHAP. VI. 



Yon, I am sure, will sympathise in my happiness. I 

 believe I should never have married bnt for this charming 

 woman, whose views and whose tastes coincide with my 

 own, and who is eminently qualified to promote my best 

 efforts and objects in life. 



I am, your affectionate Son, 



H. DAVY: 



He wrote to his brother, at that time a medical 

 student at Edinburgh : 



MY DEAR JOHN, Many thanks for your last letter. I 

 have been very miserable. The lady whom I love best 

 of any human being has been very ill. She is now well 

 and I am happy. Mrs. Appreece has consented to marry 

 me, and when the event takes place I shall not envy kings, 

 princes, or potentates. 



I am, my dear Brother, ever most affectionately yours, 



H. DAVY. 



The Laboratory Note-Book at this time contains very 

 little work. 



On February 21, 1811, he had a paper read to the 

 Royal Society on a ' Combination of Oxymuriatic Gras 

 and Oxygen Gras, called Euchlorine.' 



In July the action of chlorine on carbonic oxide, 

 exposed for hours to bright sunshine, was examined. 

 He wrote, 'The new gas seems to consist of equal 

 volumes of chlorine and carbonic oxide condensed to 

 one volume.' 



On August 7 Davy wrote in the Laboratory Book, 

 ' To get nitrous oxide, nitrous gas, and very pure 

 chlorine for experiments. To try to decompose 

 nitrogen or te combine it with chlorine.' 



