The sun. [volume] (New York [N.Y.]) 1833-1916, 1890-05-04

The photoRraphinR Of caves other chambers under
ground, where portable camera be easily IN.
stalled offers particular difficulty. aud 1t is . com.
parAtvey simple matter to obtain curious and inter
esnR views under such circumstances iumina ng the
bowels Of the earth by burning magnesium tape which
gives brilliant light by means OF which surrounding
objects eau be photographed The of electricity hAG
however, enabled = photograph to be taken recently
under most exceptional and difficult conditions land
aide occurred In the most sudden manner At quarry
in France and large number OF Workmen buried
in the SubterrAnean gasre 1t supposed that the
men were sntombed In Of the galleries about go
feet below the mouth OF the mine but hing certain
was known OF their position and for attempt at
TO have any chance OF success approximate idea
Of their whereabouts had to be gained The difficulty
was SurmOuned by sinking shaft about foot In
diameter In the direction Of the gallery and through 1t
lowering. by means Of chain. small camera mount
cd In metallic tube The camera WAS piVOted within
tho tube At itS upper end. so that It might
be fixed at any angle by tiEhtspnE or slAcksn
ing the connecting cord Above and below the camera
placed rows Of iBcEndsscent lamps and when the
apparatus had been IOWersd the camera mAdS TO
incline outward from the la order 20 photograph
the interior Of the gallery all that neesSAAry
turn Oh and hight the incSndeSeSnt Tampa
the plate being exposed A. the time Ia this
nrf excellent results obSBsd from phOtoKT Aphic
point u the ims VI exposure being i've minutes
Tho sAd fact the snt0nbsd wOrkmen peTShed from
hunger does nol "a Auy way dsAet from the usefulness
and ingenuity Of tLs dsYlrs
Tho Development ~ slsclric Sslding has naturally
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