Referee's report by Ernest Howard Griffiths, on a paper 'The kata-thermometer as a measure of ventilation' by Leonard Erskine Hill, H M Vernon and D Hargood-Ash Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London', but not in Section A. Feels the information may be of more interest to biologists. The experiments are not extensive enough to justify the conclusions. Suggests the opinions of a biologist be sought. [Published in the 'Proceedings of the Royal Society of London' B, 1922] Endorsed on verso as received 21 October 1921. [October 1921]