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a system of visible molecular actions

image

*
Plate XXXIII, Fig. 3
Previous to bursting the black portion of the first order of colours has appeared at the apex, as shown in Fig. 3. (p 492)

illustrating David Brewster (1781-1868 *), “On the Colours of the Soap-Bubble.“ Transactions of the Royal Society of Edinburgh 24 (1867) : 491-504

epigram from page 502.
via a search (unsuccessful) for “reading spectacles” + “transactions.”
 

15 July 2013

tags: rounds; D. Brewster, “On the Colours of the Soap-Bubble“ (1867)