. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. LIPPMANN HELIOCHROMES CAJAL. 247 Fig. 12. Section through overexposed bkie. The paleness of the laminae e and the absence of the mirror zone will be noticed. Fig. 13. Section through overexposed orange. The first lamina / is wanting, and the second is also rather pale. Fig. 14. Section through bright blue mixed with white; a mirror zone, h fine secondary laminae. Fig. 15. Section througli bright lemon yellow. The first laminae represent the


. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. LIPPMANN HELIOCHROMES CAJAL. 247 Fig. 12. Section through overexposed bkie. The paleness of the laminae e and the absence of the mirror zone will be noticed. Fig. 13. Section through overexposed orange. The first lamina / is wanting, and the second is also rather pale. Fig. 14. Section through bright blue mixed with white; a mirror zone, h fine secondary laminae. Fig. 15. Section througli bright lemon yellow. The first laminae represent the phase of conversion into the mirror zone. Fig. 16. Section through underexposed and over- developed green, which corresponds to the shadow side of an orange. The fineness and transparenc}^ of the laminae, which are somewhat too dark in the reproduction, will be noted. Fig. 17. Section through the blue in a plate exposed without a mercury mirror. S;' Fk;.. Fig. ]o. COLORS MIXED WITH WHITE. Fig. 1< IF |! Fig. 11:: Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Board of Regents; United States National Museum. Report of the U. S. National Museum; Smithsonian Institution. Report of the Secretary. Washington : Smithsonian Institution


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