rocks beneath the buried star might have been condensed by the
shock so as to occupy less space.

"These considerations are eminently pertinent to the study of the
crater and will find appropriate place in any comprehensive
discussion of its origin; but the fact which is peculiarly worthy
of note at the present time is their ability to unsettle a
conclusion that was beginning to feel itself secure. This
illustrates the tentative nature not only of the hypotheses of
science, but of what science calls its results.

"The method of hypotheses, and that method is the method of
science, founds its explanations of nature wholly on observed
facts, and its results are ever subject to the limitations
imposed by imperfect observation. However grand, however widely
accepted, however useful its conclusions, none is so sure that it
cannot be called into question by a newly discovered fact. In
the domain of the world's knowledge there is no infallibility."

After Prof. Gilbert had finished his experiments, Mr. Volz tried
some of his own along the same line. He found upon trial that
the meteorites in his possession were non-magnetic, or,
practically so. If these, being pieces of the larger meteorite
which was buried in the hole, were non-magnetic, all of it must
be non-magnetic, which would account for the failure of the
needle to act or manifest any magnetic attraction in the greater
test.

Mr. Volz also made another interesting discovery in this same
connection. All over the meteorite zone are scattered about