Print. [Twilight and afterglow effects at Chelsea, London. Nov 26th. 1883. / W. Ascroft del. ; Lith & Imp. Camb. Sci. Inst. Co]. - [Proof before letters]. - [Cambridge, 1888]. - Chromolithograph; 31x24cm. - Proof for second frontispiece plate from: The eruption of Krakatoa, and subsequent phenomena. Report of the Krakatoa Committee of the Royal Society / ed. GJ Symons. - London, 1888. - Reproduces on one sheet, three pastel sketches by William Ascroft (1832-1914); [No.4 About 4.40 pm, No.5 About 5.00 pm, No.6 About 5.15 pm]; printed to the artist's direction with buff Rowney mount surround to originals, by the Lithographic Department of the Cambridge Scientific Instrument Company