Referee's report by James Gray, on a paper 'The effects of cold and colchicine on mitosis in the newt' by Horace Newton Barber and Harold Garnet Callan Sectional Committee: Zoology Recommended for publication in the 'Proceedings of the Royal Society of London'. All but one of the observations are of little interest, and the discussion is of a highly speculative nature. No reference is made to relevant literature. Contains extra question - 'Is there any information contained in the paper which likely to be of value to the enemy?' Referee replies no. [Published in the 'Proceedings of the Royal Society of London'] No received date. nd [1942]