XXXI 



His Friday discourses were on the Identity of Electricity derived from 

 different sources ; on the practical prevention of Dry Rot in Timber ; on 

 the investigation of the Velocity and Nature of the Electric Spark and Light 

 by Wheatstone ; on Mr. Brunei's new mode of constructing Arches for 

 Bridges ; on the mutual relations of Lime, Carbonic Acid, and Water ; 

 on a new law of Electric Conduction ; and on the power of Platina and 

 other solid substances to determine the combination of gaseous bodies. 



In the early part of the year Mr. Fuller had founded a professorship of 

 chemistry at the Royal Institution, with a salary of about 56100 a year. 

 Mr. Faraday was appointed for his life, with the privilege of giving no 

 lectures. He was made Corresponding Member of the Royal Academy of 

 Sciences of Berlin, and Hon. Member of the Hull Philosophical Society. 



M. 42 (1834). 



The seventh series of Experimental Researches was on Electro-chemical 

 Decomposition (continued) : on some general conditions of Electro-decom- 

 position ; on a new measure of Volta Electricity ; on the Primary and 

 Secondary character of bodies evolved in Electro-decomposition ; on the 

 definite nature and extent of Electro-chemical Decomposition ; on the 

 absolute quantity of Electricity associated with the Particles or Atoms of 

 Matter. 



The eighth series was on the Electricity of the Voltaic Pile, its source, 

 quantity, and general characters ; on simple Voltaic Circles; on the Intensity 

 necessary for Electrolyzation ; on associated Voltaic Circles on the Voltaic 

 Battery ; on the resistance of an Electrolyte to Electrolytic Action ; general 

 remarks on the active Voltaic Battery. The ninth series was on 

 the influence by induction of an Electric Current on itself, and on the 

 inductive action of Electric Currents generally. 



He gave four Friday discourses, the first on the principle and action of 

 Ericsson's Caloric engine. The other lectures were on Electro-chemical 

 Decomposition ; on the definite action of Electricity ; and on new appli- 

 cations of the products of Caoutchouc. 



He was made Foreign Corresponding Member of the Academy of 

 Sciences and Literature of Palermo. 



Mt. 43 (1835). 



The tenth series of Experimental Researches was on an improved form 

 of the Voltaic Battery, some practical results respecting the Construction 

 and Use of the Voltaic Battery. 



He gave Friday discourses on Melloni's recent discoveries on Radiant 

 Heat ; on the Induction of Electric Currents ; on the Manufacture of Pens 

 from Quills and Steel, illustrated by Morden's machinery ; on the Condi- 

 tion and Use of the Tympanum of the Ear. 



In July he went with Mrs. Faraday from Brighton to Dieppe, spending 

 a week in Paris, and some days at Geneva ; he stayed two days at Cha- 

 mouni. He writes to his friend Magrath : — " We are almost surfeited with 



