New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1884-10-17
!SCILNCE IN Ne WIOHT.
A QUEER EXPERIMENT IN PHOTOGRAPHY.
ATOMS AND CAICCLAToRs-TlunTl-oN FACES
FUSED INFO ONE.

ATOMS AND Observation-Disclosures FACES
FUSED INFO ONE
fBy TELEGRAPH II THs rRIBuNrl
NEWPORT, Oct. 1G.-At tO-day's session Oh
the National Academy Of Sciences Professor Woic"t'
Gibbs read paper the theory OF atomic NolneS III
which he stated that the solid atoms of hydrogen occupy
onlv seven parts IN thousand Of the gas. the rest
be,ns filled up with mtercsal spaces. From this he
con,puied the density of the hydrogen atoms at one
hundred and twcnty-Cight ten th'usahdths,
that OF water al standard temperature and pressure
Professor Pierce suggested that II was doubtful whether
atoms do actually occupy space at al! Ihey may Ice
merely boscoyliohan points, Professor Fainn Rogers
read paper on Grants difference engine. which Ia an
impro, ement B,bhts calculating machine Many
imporaut improvements have been nade since the ma
chine was exhibited the Centennial IA Philadelphia
The new machine smaller and mlcr than the old
aud prepares it, own mould for printing the results,
thus eliminating errors Of copyiss ana tyPcSctters.
The discussion that followed brought Out difference Of
opinion among members 81 the Academy ~ t" The al van
faecs a. to the calculating machine Professor hilgrd
Thought il would not save much time in astronomical
tLourli Il iuirlr n some other natlemat al work.
Professor " T. Brewer read paper on grasses.
mechanically injurious to live stock lie mentioned lhc
squirrel gae' and some Other knIN al ,ir MeH'i IN,
Needs of which pierce the bodies of animals ana nave
80 ,br,, ,,.,.e ti,.y are not eaten an a. nutritious
grasses are. The latter. especially IN dry season.
are often eaten close down To the roots as
r. d. ROY them Professor PlmpellY read paper
sxpern,aI composite photograph Of the members Of
the academy. Thi- WAS In the same direction a. tho Pho
tograph- made los Cation to arrive At the average OF Ger
Tain tyucs 81 men. the 0f tnrtA-Oue men q" the
academy the compound negative was formed 10y exposing
the FOR two seconds 10 the photograph "i tah
member making total exposure of slNlt-tWO seconds
which was found to he the best Tine to cNp0Sc
any one the photographs separately The resulting
pictures shove clearly the feature common t. AL but
onl, family the p,cuhriiie. oi each The camera was
focused since ewes H different people diner
IN their apart, this produce, some lndStinct
ness Ia the rest Of the picture particularly The mouth
which appears to lack decision rive pictures 81 different
glasses were shown This method 81 combining portraits
give startling results In bringing ont types either
az mental, moral or OF family race
classes such criminals and cousuml'tivcs.
Professor C. T. TirIcc's paper the algebra Of logic
wa an ab.trse and technical essay, DESIGNED To show
the fallacy oil tho ordinary sylogstic method of
IeasOniuf.
Tie fsi afternoon session was held today Professor
Pierre read a paper ou gTsVtitii0n survey He con
siderod the variations, due 10 gravity, In pendulum
beats and advised extended experiments under
(;oyeiuurut auspices lie also read paper on
difference Ia ph, seal scusibiiV 10 weight sue dts
tance and on Ic gave the result ~ experiments he
had made Professor Peters read paper "n the tar
catalogue. which cnuneratcs l,O22 stats, am quoted
Ptoeiuy AlHagrsL
Professor j. T. langley arrNc ed to-day, and WI! read
paper the tcIcttur, OF thc moon IRON ,,"r Hrhiy
j. HI. OF cambrdg', arrived also. The session VIII al
lOuIu TOMORROW.