were obtained various views of the inaccessible gallery in different
planes.

[Illustration: FIGS. 2 AND 3.--REPRODUCTION OF PHOTOGRAPHS TAKEN IN
THE INACCESSIBLE GALLERIES.]

We reproduce herewith two of Mr. Langlois' most interesting
photographs. One of these shows the head of the corpse of a young
miner whose face stands out in relief against the side of the gallery
(Fig. 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._

* * * * *