| Description | This volume, which probably represents C T R Wilson's first research records on his return to Cambridge, opens with some miscellaneous notes on osmotic pressure, heats of dilution, etc., followed by abstracts of papers by Coulier, Aitken, Helmholtz and others, on cloud formation. He then poses a set of questions upon cloud formation and on 26 March 1895, gives a sketch of an early condensation apparatus together with a set of observations. The rest of the volume consists of laboratory records showing the gradual development and improvement of expansion apparatus designed to give accurate results upon the critical limit for cloud formation. By the end of this volume, between 3 August and 15 August 1895, the critical limit for drop formation had been established as being close to v2/v1=1.25. The difference between this re-creative process and condensation upon dust nuclei was established empirically and the cloud forming after-effects of previous large condensations were also recognized. |