ANNALS 



OF 



PHILOSOPHY 



r 



MAY, 1824. 



Article I. 



Remarks on Solar Light and Heat. By Baden Powell, MA. of 

 Oriel College, Oxford. 



(To the Editor of the Annals of Philosophy.) 



SIR, April 2, 1824. 



In explanation of the design of the present communication, I 

 conceive it necessary to observe in the first instance, that having 

 been engaged in experiments on solar light and heat, I have laid 

 accounts of some of them before the Royal Society (see reports 

 of Royal Society, Annals, Feb. 1824) : those accounts, however, 

 being confined to the mere detail of the experiments, I wish 

 through the medium of your journal to offer some remarks on 

 the subject, of a more general nature, and which may be consi- 

 dered as forming a sort of introduction to such experimental 

 researches. 



If then in taking a brief review of the present state of our 

 knowledge upon this subject, my remarks and statements should 

 not be of a nature wholly new, my design as thus explained will 

 be a sufficient excuse ; and the more so as I could not proceed 

 to the few experiments here given without such preliminary 

 considerations. I am, Sir, your obedient servant, 



B. Powell. 



I. (1.) Speaking according to our ordinary sensations, we are 

 accustomed to say that the sun communicates both light and 

 New Saks, vol. vii. y 



