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peculiar spectra agreeing together. Some-
times Uranus shows Frauenhofer lines, in-
dicating reflected solar light. But generally
these are not seen, and six broad bands of
absorption appear. One is the F. of hydro-
gen; another is the red-star line of Jupiter
and Saturn. Neptune is a very difficult ob-
ject for the spectroscope.
Quite lately [7] P. Lowell has announced
540
