When I wrote a short history of archaeological and other air-photography in 1928 the earliest examples quoted were those taken by Major Elsdale between 1880 and 1887 ; this information was given me by the late Colonel Sir Charles Arden-Close, himself a pioneer of the craft. Since then two earlier instances have come to light. The Science Museum, South Kensington, has exhibited an air-photograph of Boston, Mass., taken in 1877 ; but unfortunately it has no history. In a book published in 1930 there is reproduced a photograph taken above Paris from a captive balloon, taken by that photographic genius who called himself Nadar. Through the good offices of Professor Vaufrey, editor of L’AnthropoZogie, prints were obtained from the Service Photographique des Monuments Historiques, and two combined are here reproduced on PLATE III. They look towards the Arc de Triomphe, and have on the left the Avenue du Bois de Bouiogne (Avenue Foch) and on the right that of Victor Hugo : note that these splendid thoroughfares, then only a decade old, were still only half built-up (the left hand part of the photograph is defective). Photography itself was not much older, Fox Talbot’s first efforts having been made from 1842 onwards.