Referee's report by William Edward Curtis, on two papers 'New studies on active nitrogen. I. Brightness of the after-glow under varied conditions of concentration and temperature' and 'New studies on active nitrogen. II. Incandescence of metals in active nitrogen, and quantitative estimates of the energy liberated' by Robert John Strutt, Lord Rayleigh Sectional committee: Physics Recommended for publication in Proceedings. [Published in Proceedings of the Royal Society A, 1940]. Endorsed on verso as received 30 May 1940. May 1940