A systematic, illustrated survey of atmospheric cloud forms that describes high, middle, and low types with attention to shape, texture, and associated weather. It presents classification and nomenclature, plate photographs, guidance on measuring altitudes and photographing clouds, and practical notes for meteorologists and artists. The author treats the physical causes of condensation in general terms, outlines observational methods, and supplies references for further study, with the dual aim of promoting a more exact cloud vocabulary and encouraging careful, informed appreciation of cloud structure and beauty.