Referee's report by Alfred Gordon Gaydon, on a paper 'The heats of formation of free CN and free CH2, and the relationship between D(CO), D(CN) and D(N2)' by L H Long Sectional Committee: Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. Refers to work by L Gero and H H Voge. As the paper is a critical review rather than an experimental work, discussion of these recent papers is essential. Suggests giving a fuller explanation for the dismissal of the work by Leo Brewer, Paul W Gilles and Francis A Jenkins. Note by Alfred Charles Glyn Egerton asks if the paper might be more suitable elsewhere, as it does not contribute anything new, although a similar paper was accepted previously. [Published in the 'Proceedings of the Royal Society of London'] No received date. [1948]