Bestanddeel 6-20 - Conduction of electricity through gases

This was first published by J.J. Thomson in 1897. The 3rd edition was produced in collaboration with G.P. Thomson and published in 1928. The material consists of fragments of varying length of J.J. Thomson's original manuscript, bearing his pagination. All bear later revisions, additions, notes to the printer, etc., some in J.J.'s hand but mainly by G.P Thomson.