Referee's report by Hugh Longbourne Callendar, on a paper 'Contributions to the osmotic theory of solution' by Randal Thomas Mowbray Berkeley and C V Burton Responds to the problems the authors had with his original report. Still believes certain aspects to be too complicated but acknowledges that they have rectified mistakes in the equations. Thinks the authors should be encouraged to pursue experimental work but their theoretical work needs more careful digestion and compression. Thinks that they are hopelessly inadequate in comparison to Zawidzki's work on vapour pressures. [Not published]. 1908