The Bryan daily eagle. (Bryan, Tex.) 1895-1898, 1896-06-03

Mtif - NNlnfANANH NAANhHAf ""FHTN
i've OF Jules Verne's observation cham
Der Of the Nautilus IN the device cm-
1loyed by the ingenious photographer
10 give TO the world the first ncientihc
knowledge on this most interesting sub
lect. He has made us acquainted with
the denizens OF the deep In all OF their
oecullaritles. "Chronophotography,"
q the name given by its discoyersr TO
this new form of photography. by Il
he has been enabled TO examine not
pnly the motions OF cells. sharks, to1ds.
stc.. but also very small marine ant
mails. This was originally matter
II extreme difficulty. as a brilliant IL
animation. not to be had with an ordi-
nary aquarium. was necessary. To
remove this obstacle. NJ Marcy had a
special apparatus made. which. 10 a GER
ain extent. made hts work much caster.
This crude contrivance was nothing
more nor less than an aquarium. with
front and back glass sides. which was
placod IN an opening made In the outer
vail. The light. therefore, penetrated
he darkened chamber through the me-
iium OF the transparent glass sides.
separated by the seml-transparent
water. In which the FISH were swim
ming. This arrangement gave the tsn
he appearance OF silhouettes against a
light hackerovad.
After dcyoung considerable thought
20 the subject. NJ. Marcy finally hlt up
On another scheme. This was TO llnce
he aquarium somewhat lower than the
lpenlng and provide q with en- Opaque
rap. or leaf. which could De swung up
ghCn II became necessary 10 illuminate
be aquarium In the manner hrst men
Toned. the opening above being en-
lrely closed. Thus the llght at the
back Is completely shut OF. and he
'ays. entering from above are reelected
ioWuward TO an angle Of IS degrees b.!
4 mirror placed above Il. From thirty
lfty exposures a second were then
made BY the photographic apparatus
Which was placed In the dark room be-
hind and opposite the aquarium, W
mch a manner that the occupants wer,
the field " the objective
Tho negatives are made on aoXib.'
8inas. q roll OF uueyposcd llmr beinl
placed IN the camera. the free end 81
which Is secured TO q second roller, SO
hat whom the latter IS set IN molten
he Gin Is rolled upon Il, and unroile,
rom tho other The cXpoures. how
rcr. must be- made during the unwind
ng Of ,he fln. 10 matter toE raplGl,
he exposures IRE made. The flm mus
be perfectly stationary at the instant
and on arrangement Ga provided by
which the film is held Cat against III
plate CT The roller holders during th'
exposure. Motion Is communicated 4
he roll by means Of clockwork, whlc'
Il the same time rotates TIE disk b.
which the cxI osures ore made. opening
being made IN the disk, and when, Il
he course OF revolution. one Of Ties
,omcs opposite the objective. an expos
ire is made.
During the rapid movements o. th
/ lin. which traverse thirty.two incae
a second. IL hes % De held sla
uonary forty or Giiy iimol 10 aric
o avoid tearing the Glm Is passes Owe
/ m elastic. flexible p,a.o. just before
"a wound upon the roller The Mat
gives the instant the aln % arrested q
Us motion and Fprings back asaS q
soon as the same is released, Exp.sc
rolls may be removed and fresh oae
substituted in broad daylight.
In rhoiographirg the movements O
ely fsh which by the way. are trans
parent o. from ten 10 twelve pic
urcs vo. taken. this number icing al
hat was necessary. owing 20 the slow
loss OF the mcdusa's movements. tn
exposure was made With the illumna
lon coming from above and against
lark haakuound. Twenty exposure
4 second. however. were necessary q
reproducing the movements OF The sea
lorsc. whoce actions are both rapid ava
indulatluc.
The Investigations OF marine life. n
,onduciCd by VI. Marcy through his nci
INJECTIONS, are gs m,oreHiuE 10 IA
niscatmLl branch az the sclenuG
world as ere rrot Rocnlgcna to th
medical department