ARC-RN-CIEL BLANC

1799. Langwith^ Concerning the Appareances of several Arches of Colours

Contiguous to the Inner Ëdge of the Gomnion Rainbow. Phil,

432 LUMIÈRE NON POLARISÉE.

Trans. abr,, VI, 6â3. (Premières observations des arcs surnuméraires.)

179Q. Pbnbbrton, On the Abové Appearance in the Rainbow, PhiL Tr.

abr,, VI, 6s &. (Essai d'explication au moyen des accès.)

180/i. YoDNG, Ëxperiments and Calculations Relative to Physical Optics. —

Application to the Supemumerary Rainbows, PhiL Tr,, 180/1.

1 836. PoTTER , Mathematical Considérations on the Problem of the Rainbow,

Trans, ofthe Soc. of Cambr,, VI, i4i.

i836. AiRY, Intensity of Light in the Neighbourhood ofa Caustic, Trans, of

the Soc, ofCambr,, VI, 379.

1837. Rabinkt, Mémoires d optique météorologique, C. R,, IV, 638. 18&0. QiTBT, Sur les arcs-en-ciel supplémentaires, C, A., XI, 9&5.

18A9. Miller, On Spurious Rainbows, Tram, ofthe Soc. of Cainhr,, VII.