Discussion on "The sub-division of the electric light"

Alexander Siemens, Crompton, J. Hopkinson, Berly, Tyndall, J.N. Shoolbred, Ayrton, Moulton, C.F. Varley, Swan
1880 Journal of the Society of Telegraph Engineers  
doi:10.1049/jste-1.1880.0042 fatcat:ivblqpqo6zddvadsgz7f223lya