KELVIN, WILLIAM THOMSON, First Baron. On Homogeneous Division of Space. Offprint from: the Proceedings of the Royal Society, Vol. 55. PRESENTATION COPY, inscribed "with the author's compliments" on the front wrapper--The Molecular Tactics of a Crystal. Journal of the Oxford University Junior Scientific Club. No. 18, May 25, 1894. PRESENTATION COPY, inscribed "with the author's compliments" on the the first page--On the Electrification of Air. Offprint from: the Proceedings of the Royal Society, Vol. 56. PRESENTATION COPY, inscribed "with the author's compliments" on the front wrapper--and 5 other offprints or pamphlets (not inscribed). All London, vd. Together, 9 pamphlets, 8vo, wrappers or disbound; condition varies. (8)