| Description | Writing on two points in connection with Laby's paper on 'Condensation of Organic Vapours' which is about to be printed. Figures one to three are simple and are in the engravers' hands. Figure four, the curve, needs completion. Asks if he would be good enough to get the curve neatly inked in, so that it can be photographed. At the same time he might indicate what horizontal and vertical scale-lines are required to be reproduced and what should be the limits of the figure. If he feels that the marginal numerals and letters would be better done by the engravers, they shall insert them. The abstract is 'Proceedings [of the Royal Society]'. |