xxiv 



Disinfecting Soda Liquid. There were nineteen Friday evening meetings at 

 the Royal Institution. Faraday gave an account of the magnetic pheno- 

 mena developed by metals in motion, on the chemical action of chlorine 

 and its compounds as disinfectants, and on the progress of the Thames 

 tunnel. In this year he published his " Chemical Manipulations," in one 

 volume, 8vo. A second edition appeared in 1830, and a third in 1842. 

 He was made a Correspondent of the Societe Philomathique, Paris. 



JSt. 36 (1828). 



He had a few words in the Quarterly Journal on anhydrous crystals of 

 sulphate of soda. He gave four of the Friday evening lectures : Illustra- 

 tions of the new Phenomena produced by a current of Air or Vapour 

 recently observed by M. Clement ; on the reciprocation of Sound ; and 

 also a discourse on the Nature of Musical Sound. The matter belonged 

 to Mr. Wheatstone, but was delivered by Mr. Faraday. The last evening 

 was on the recent and present state of the Thames tunnel. 



He was made a Fellow of the Natural Society of Science of Heidelberg. 



He was invited to attend the meetings of the Board of Managers of the 

 Institution ; and he received his first (gold) medal, one of a series of ten 

 given to Members of the Royal Institution (as a reward for chemical dis- 

 coveries) by Mr. John Fuller, a Member. 



m. 37 (1829). 



He gave the Bakerian lecture at the Royal Society on the Manufacture 

 of Glass for Optical purposes. 



This most laborious investigation led to no good in the direction that 

 was originally expected, but the use of the glass manufactured, as described 

 afterwards, became of the utmost importance in his diamagnetic and mag- 

 neto-optical researches, and it led to the permanent engagement, in 1832, 

 of Mr. Charles Anderson as Faraday's assistant in all his researches, "to 

 whose rare steadiness, exactitude, and faithfulness in the performance of 

 all that was committed to his charge Faraday was much indebted." 



He gave Friday evening discourses on Mr. Robert Brown's discovery of 

 Active Molecules in bodies, either organic or inorganic; on Brard's test of the 

 action of weather on building stones ; on Wheatstone's further investiga- 

 tions on the resonances or reciprocal vibrations of volumes of air ; on Bru- 

 nei's block machinery at Portsmouth ; on the phonical or nodal figures of 

 elastic laminse ; on the manufacture of glass for optical purposes. 



He was made a member of the Scientific Advising Committee of the 

 Admiralty, Patron of the Library of the Institution, Honorary Member of 

 the Society of Arts, Scotland. 



At the end of June he writes to Colonel Drummond, Lieutenant-Governor 

 of the Royal Academy, Woolwich : — "I should be happy to undertake the 

 duty of lecturing on chemistry to the gentlemen cadets of Woolwich, pro- 

 vided that the time I should have to take for the purpose from professional 



