XX111 



There were seventeen meetings of the members of the Royal Institution 

 held on Friday evenings during this season, and at these Faraday gave 

 seven discourses — on Pure Caoutchouc; on Brunei's Condensed Gas-engine; 

 on Lithography ; on the existence of a limit to Vaporization ; on Sulpho- 

 vinic and Sulphonaphthalic Acid ; on Drummond's Light ; on Brunei's 

 Tunnel at Rotherhithe. 



This year he was relieved from the duty of chemical assistant at the 

 lectures given at the Institution, because of his occupation in research, and 

 he was made an honorary member of the Westminster Medical Society. 



In his chemical notes there is an analysis of "committee glass" and Saxony 

 gunpowder, and remarks on calico printing and soap making, and soda from 

 common salt. 



In July he again was in the Isle of Wight. 



m. 35(1827). 



Faraday gave his first course of lectures in the theatre of the Institution 

 in April on Chemical Philosophy. 



He writes: — "The President and Council of the Royal Society ap- 

 plied to the President and Managers of the Royal Institution for leave 

 to erect on their premises an experimental room with a furnace, for the 

 purpose of continuing the investigation on the manufacture of optical glass. 

 They were guided in this by the desire which the Royal Institution has 

 always evinced to assist in the advancement of science ; and the readiness 

 with which the application was granted showed that no mistaken notion 

 had been formed in this respect. As a member of both bodies, I felt 

 much anxiety that the investigation should be successful. A room and 

 furnaces were built at the Royal Institution in September 1827, and an 

 assistant was engaged, Sergeant Anderson of the Royal Artillery. He 

 came on the 3rd of December." 



He had four papers in the Quarterly Journal of Science : — 1, on the 

 Fluidity of Sulphur and Phosphorus at common temperatures. " In this," 

 he says, " I published some time ago [the year previous] a short account of 

 an instance of the existence of fluid sulphur at common temperatures ; and 

 though I thought the fact curious, I did not esteem it of such importance 

 as to put more than my initials to the account. I have just learned through 

 the * Bulletin Universel' for September, p. 78, that Signor Bellanihad ob- 

 served the same fact in 1813, and published it in the 'Giornale di Fisica.' 

 M. Bellani complains of the manner in which facts and theories which have 

 been published by him are afterwards given by others as new discoveries ; 

 and though I find myself classed with Gay-Lussac, Sir H. Davy, Daniell, 

 and Bostock, in having thus erred, I shall not rest satisfied without making 

 restitution, for M. Bellani in this instance certainly deserves it at my hand." 

 2, on the probable decomposition of certain gaseous compounds of carbon 

 and hydrogen during sudden expansion ; 3, on transference of Heat by change 

 of Capacity in Gas ; and 4, Experiments on the Nature of Labarraque's 



