Experiments with Sulphuric Acid .—These are given in Table X. The headings of the columns are the same as before. 
Column (ll) gives the lo g e pjpi corrected for temperature only, and column (12) headed “jump” is concerned with 
fluctuations in the flow of air consequent on oscillating the vessels. 
Table X.—Solutions of Sulphuric Acid at 30 C. 
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* In these experiments water was lost to the system by condensing on parts that could not be weighed (actually observed). 
f The numbers in column (10) lead to values for the vapour pressures of the solutions which differ as much as 1 per cent, from Regnaults experiments 
(see Landholt and Bornstein, ‘ Tabellen ’), but from Regnault’s results (which are for different temperatures) a temperature coefficient was calculated 
by means of which the numbers in column (11) were reduced to 30“ C.; unfortunately there seem to be no data for carrying out a similar reduction for 
the two very dilute solutions. 
