PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 



184^0. No. 42. 



February 27, 1840. 



The MARQUIS of NORTHAMPTON, President, in the Chair. 



William Jory Henwood, Esq., was balloted for, and duly elected 

 into the Society. 



The reading of a paper entitled, " On the Chemical Action of the 

 Rays of the Solar Spectrum on Preparations of Silver and other 

 Substances, both metallic and non-metalHc ; and on some Photo- 

 graphic processes ; " by Sir John F. W. Herschel, Bart., V.P.R.S., 

 &c., was resumed but not concluded. 



The President stated to the Meeting, that, accompanied by the 

 Treasurer, Secretary, and other Members of the Council, he had, 

 on Tuesday last, presented the Address to His Royal Highness 

 Prince Albert, to which His Royal Highness returned the following 

 gracious answer : 



" It has been the source of great pleasure to me that my arrival in 

 this country should have been hailed with such flattering demon- 

 strations of sincere affection. Amongst the many that have reached 

 me, none have given me more satisfaction than that which I have 

 just received from the Council of the Royal Society." 



March 5, 1840. 



The MARQUIS of NORTHAMPTON, President, in the Chair. 



Captain John Theophilus Boileau was balloted for, and duly 

 elected into the Society. 



The reading of a paper entitled, On the Chemical Action of 

 the Rays of the Solar Spectrum on Preparations of Silver and other 

 Substances, both metallic and non-metallic ; and on some Photo- 

 graphic Processes;" by Sir John F. W. Herschel, Bart., V.P.R.S., 

 &c., was resumed and concluded. 



The object which the author has in view in this memoir is to place 



