Manuscript, 'Cloud photography conducted under the Meteorological Council at the Kew Observatory [London]' by Richard Strachey and G M [George Mathews] Whipple The authors write: 'In 1878 the Meteorological Council decided upon undertaking a series of experiments with the view of attempting by means of photography to obtain a record of the height and velocity of the clouds, as indicating the movements of the upper parts of the atmosphere. For this purpose a plain cubical camera was constructed, with its optical axis directed to the zenith, and a number of pictures of clouds were thus obtained.' Annotations in pencil and ink. Includes one page of graphs relating to the authors' observations. Subject: Meteorology Received 23 April 1891. Read 30 April 1891. A version of this paper was published in volume 49 of the Proceedings of the Royal Society as 'Cloud photography conducted under the Meteorological Council at the Kew Observatory'. 1891