Airy, Sir George Biddell. No. 18 in **E,182.12 On the intensity of light in the neighbourhood of a caustic. From the Transactions of the Cambridge Philosophical Society. Vol.
6, part 3. Cambridge [Eng.]. Printed by J. W. Parker. 1838. 379-402 pp. Plate. 4°.
 
This card was printed at the Boston
#382 — Optics.
Public Library, March 30, 1926.