MAXWELL, James Clerk (1831-1879). A Treatise on Electricity and Magnetism, Oxford: Clarendon Press, 1873, 2 volumes, 8°, FIRST EDITION, FIRST ISSUE, 20 lithographed plates, errata slip in volume I (titles perforated and with cancellation stamp on verso, accession stamp on following leaf in each volume, 2B7 of vol. I torn at outer margin, some margins in the same vol. a little frayed, vol. II lacking advertisements, and with half title and title crudely repaired at inner margin), mixed bindings, volume I: original cloth (spine restored, library markings), volume II: modern brown buckram. [Honeyman 2185; Grolier 72: "Maxwell here advanced the hypothesis that light and electricity are the same in their ultimate nature"; Norman 1566] Provenance: JCL (2)