Abstract
King and Ventura1 have recently directed attention to the value of coloured ‘Perspex’ in the construction of filters for colorimetry, and it may be of interest to describe a similar use to which this material had been put in this laboratory.
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References
King, E. J., and Ventura, S., Nature, 168, 702 (1951).
Atkins, G. A., Ann. Bot., 50, 197 (1936). Bünning, E., Planta, 27, 583 (1937).
Johnston, Earl S., Smith. Misc. Coll., 92 (11), 1 (1934).
Went, F. W., and Thimann, Kenneth V., “Phytohormones”, (Macmillan, New York, 1937), Boysen Jensen, P., translated and revised by Avery, George S., and Burkholder, Paul R., “Growth Hormones in Plants” (McGraw-Hill, New York, 1936).
Heath, O. V. S., Nature, 168, 950 (1951).
Imperial Chemical Industries, Ltd., Plastics Division, I.S. Note NO. 208.
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BALLARD, L. Coloured ‘Perspex’ for Darkroom Lights. Nature 170, 840–841 (1952). https://doi.org/10.1038/170840a0
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DOI: https://doi.org/10.1038/170840a0
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