„ „ Scott. 1895.
A New Instrument for Cloud Measurement. Ekholm. 1893.
Calculation of Photographic Cloud Measurements. Olsson. 1894.
The Motion of Clouds. Shaw. 1895.
5. Reports of the British Association. Reports of the Committee on Meteorological Photography. Clayden. 1891 to 1900.
The reports for 1896 and 1900 refer mainly to the measurements described in the text.
6. “Cloudland.” Clement Ley.
The work in which Mr. Ley set forth his proposed scheme.
7. “A Popular Treatise on the Winds.” Ferrel.
Not a “popular” work in the usual sense, but contains lucid descriptions of the mechanics of the atmosphere.