A 



JOURNAL 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND 



THE ARTS. 



SUPPLEMENT TO VOL. XXUL 



ARTICLE I. 



The Bakerian Lecture. An Account of some New analy- 

 tical Researches on the Nature of certain Bodies, Sfc. 

 By Humphry Davy, Esq. Sec. R. S. F. R. S. Ed. and 

 M. R. I. A. 



(Continued from Page Z57.) 



3. Analytical Experiments on Sulphur. 



J. HAVE referred, on a former occasion*, to the experi- Sulphur seem. 

 ments of Mr. Clayfield and of Mr. Berthollet jun., which h^ocST** 

 seemed to show that sulphur, in its common form, con- 

 tained hidrogen. In considering the analytical powers of 

 the voltaic apparatus, it occurred to me, that though 

 sulphur, from its being a nonconductor, could not be ex- 

 pected to yield its elements to the electrical attractions and 

 repulsions of the opposite surfaces, yat that the intense heat 

 connected with the contact of these surfaces might pos- 

 sibly effect some alteration in it, and tend (o separate any 

 elastic matter it might contain. 



On this idea some experiments were instituted in 1807. A Experiments t« 

 eurved glass tube, having a platina wire hermetically sealed ascerUm * **• 

 in its upper extremity, was filled with sulphur. [See our 

 last Number, PI. VII, Fig. 4.] The sulphur was melted 



* Bakerian Lecture, 1808, p. 16; or Journal, Vol. xx, p. 302. 

 Vol. XXIII. No. 105, — Supplement. Y ©ver 



