18 MOLECULAR ASSOCIATION

the preceding section. Recently most of the investigators of
the dissociation of gas molecules have studied the simultaneous

t> eo ua TH co e>i r-<
C/D CO CO CO 0) (/) CO CO
AtOTns in Molecule.
effect of both temperature and pressure. Fig. 3 represents in
graphic form Preuner and Schupp's results of the study of
sulphur vapour under these conditions, and it will be seen that