Abstract
AT the International Meteorological Conference at Munich, in 1891, a Committee was formed to consider the question of concerted observations on the direction of motion and the height of clouds, and subsequently various countries were invited to undertake special observations during a year commencing May 1, 1896, a period which was afterwards extended until August 1897. A Committee was also appointed to prepare a Cloud Atlas, based on the classification of Dr. Hildebrandsson and the late Mr. R. Abercromby, and instructions for observing and measuring the altitudes of the clouds by theodolites, and photogrammeters were prepared by experts in this branch of meteorological science. The present handy little volume is the outcome of this action, and brings into a small compass a considerable amount of useful information which is spread over various publications, some of which are not easily accessible. It is divided into four parts: (1) the history of the subject from the middle of the eighteenth century; (2) classification according to the atlas above referred to, with a number of illustrations; (3) description of the photographic apparatus employed, and (4) the method of measuring the pictures obtained. The two last chapters will be very valuable for any one proposing to undertake the difficult task of photographing the clouds, and of determining their heights and movements. In referring to the various attempts at cloud classification, we do not find any mention of “Cloudland,” by the late Rev. W. C. Ley.
La photographie et Pétude des nuages.
Par Jacques Boyer. 8vo. Pp. vi + 80. Twenty-one illustrations. (Paris: C. Mendel, 1898.)
Article PDF
Rights and permissions
About this article
Cite this article
La photographie et Pétude des nuages. Nature 57, 509 (1898). https://doi.org/10.1038/057509c0
Issue Date:
DOI: https://doi.org/10.1038/057509c0