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PHorcGRApHY.-M. Arago communicated to the Academy
Of Science that NJ Daguerre was 'ti occupied upon mo
;nnorau series o experiments connected with the improve
men Of photography Thus, with the view of increasing
the the prepared plates, he had subjected
them TO the action electricity, while in tine camera ob'cu.
IA and had then Immediately exposed them to The rays OF


r The electric fluid had however, made the plates too


sensitive and >. much that the opening OF the COW
enq of the plate inside the obscura could not be ct
fced rapidly enough prevent portions OF the I'M
preston from being much more vivid than others. Nj
Dagucc mad therefore made use OF preparation not so
sesi,iye as that which he commonly employed and upon
again employing the force Of electricity had obtained such
deace Of Sensyeuess that only the month part OF Sc
cond necessary for Obtaining impression so that II
was expecting much anticipate that when further
improvements should be effected the actions OF the human
BODY might all be taken by the Daguerreotype