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all the flutings in the spectra of metalloids
and compounds; and other equally perti-
nent matters–until that time arrives the part
to be played by the astronomer is one of
observation. By all means, they say, make
use of ”working hypotheses” to add an in-
terest to years of laborious research, and to
serve as a guide to the direction of further
labours; but be sure not to fall into the er-
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