The Quarterly of the Texas State Historical Association, Volume 7, July 1903 - April, 1904 Page: 317
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Concerning Philip Nolan.
dispersion, arriving at the moon's orbit, faintly illumines her disk
during the time of a total eclipse.
It would seem to result from the above appearances, that if a
prism were formed of atmospheric air, the solar ray wou'd be sep-
arated thereby into two colors only, a yellow orange and a blue:
it is known to Opticians that the Compound Color of orange and
yellow and the color which Newton Calls indigo, comprise within
themselves the seven primitive colors, that is, united they ought to
form White. we ought not therefore to reject this effect of atmos-
phric air, because dissimilar to the prismatic powers of such
diaphonous bodies as are best known to us: modern experiments
have shewn that refracting bodies possess very different dispersive
powers; and when we reflect upon the heterogeneous nature of our
atmosphere, composed of at least three permanently elastic fluids,
with the adventitious mixture of perhaps a hundred others, sub-
ject from chemical affinity to perpetual resolution and composi-
tion, dissolving at all times a great proportion of aqueous fluid,
and the whole pervaded by the electric fluid; shall we then pre-
sume to doubt that Nature has it in her power to compose a re-
fracting body, whose dispersive powers are equal with respect to
the red, orange, yellow & green making rays, and tho' greater with
regard to the three remaining primitive colors yet perfectly equal
I have the honor to be with the highest respect and Considera-
Your most humble and
most Obedient Servant
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Texas State Historical Association. The Quarterly of the Texas State Historical Association, Volume 7, July 1903 - April, 1904, periodical, 1904; Austin, Texas. (texashistory.unt.edu/ark:/67531/metapth101030/m1/325/: accessed January 17, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting Texas State Historical Association.