and describing the instruments, contrived either to illustrate the theory, or render the practice entertaining : illustrated with six plates : to which is added a letter to the author, from Mr. John Birch, surgeon, on the subject of medical electricity

with some Researches on Flame

during the sessions 1841-2 and 1842-3

with special reference to his work in polyphase currents and high potential lighting

1887

an account of the phenomena of electricity, magnetism, and sound, as involved in its action : with directions for making a speaking telephone

mit besonderer Berücksichtigung des Alpenlandes

; together with a discussion of the evolutional order of the stars, and the interpretation of their spectra ; preceded by a short history of the observatory and its work