38 PROCEEDINGS OF THE AMERICAN ACADEMY 



his scattered publications, and placed them in a compact and perma- 

 nent form, suited to the private library of the student of science. His 

 " Series of Experimental Researches upon Electricity " amounted to 

 thirty ; all but one of which are now contained in three volumes, pub- 

 lished successively in 1839, 1844, and 1855. These Researches are 

 illustrated by other papers upon the same subject, originally printed in 

 the Philosophical Magazine, or in the Journal and Proceedings of the 

 Royal Institution, as the Researches themselves were in the Philo- 

 sophical Transactions. Faraday's " Experimental Researches in Chem- 

 istry and Physics" fill a fourth volume which appeared in 1859. Also, 

 under his sanction and partly from his notes, have been printed, " Six 

 Lectures on the Non-metallic Elements," in 1852 ; " Six Lectures on 

 the various Forces of Matter," in 1860 ; and " Six Lectures on the 

 History of a Candle," in 1861. 



The first edition of the " Chemical Manipulation " bears the date of 

 1827. This was followed by an American edition in 1831, and a 

 second English edition in 1842. 



Sir David Brewster was born, December 11, 1781, at Jed- 

 burgh, Scotland, also the birthplace of the accomplished commentator 

 upon Laplace's Mecanique Celeste, Mary Somerville. He died at 

 Allerly House, Melrose, in Scotland, February 10, 1868. Although 

 he had reached his eighty-seventh year, we are assured, in the circular 

 announcing his death, that " his faculties were unimpaired to the very 

 last, and he died in the full assurance of faith in Christ Jesus." 



What revolutions in old sciences, what brilliant careers of new 

 sciences, are condensed into this single lifetime ? Born before Galvan- 

 ism was even a name, he lived to see Voltaic Electricity give birth to 

 the twin sciences of Electro-Magnetism and Magneto-Electricity, throw 

 off its own ephemeral character in the sustaining batteries of Grove 

 and Bunsen, and close a long catalogue of practical triumphs in chem- 

 istry, physics, and mechanics with the oceanic telegraph. Born before 

 Chladni had revived experimental acoustics or published Die Akustik, 

 he lived to see this beautiful branch of Physics expand under the cul- 

 tivation of Savart, Cagniard-de-la-Tour, Wheatstone, Faraday, Lisse- 

 jous, and Helmholtz, until, by affiliations more startling than any which 

 Mrs. Somerville celebrates in her " Connection of the Physical 

 Sciences," the eye threatens to supplant the ear in the investigation 

 of the laws of sound, quality appears to be resolved into quantity, 

 the vowel sounds are mocked by an orchestra of tuning-forks, and 



