2) the other shows a wheel and a lot of debris heaped up
pell-mell (Fig. 3).
The series of proofs obtained from small negatives, two inches square,
gave the completest sort of information in regard to the aspect of the
subterranean gallery.
The exact place where the boring had been done and the entire and
broken pillars were recognized, as was also the presence of two
corpses, thus showing that it was indeed here that it would have been
necessary to act in order to render aid to the unfortunates.
[Illustration: FIG. 4.--FAULT THAT CAUSED THE ACCIDENT.]
In Fig. 4 is shown the appearance of the great fault that caused the
accident at Chancelade. It seems to us that this method of
photographing inaccessible subterranean galleries ought to receive
numerous applications in the future.--_La Nature._
* * * * *
SOMZEE'S NEW GAS-BURNERS.
With the object of effecting a very intimate mixture of gas and air,
and of causing this mixture to reach the point of ignition at as high
a temperature as possible, M. Leon Somzee, of Brussels, has designed
several new forms of gas burner, which we now proceed to describe and
illustrate, from particulars and by drawings kindly supplied by an
esteemed Brussels correspondent.
The high-power burner shown in Fig.
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