New-York tribune., 1875-05-17

Prof Frazer spoke upon the composition OF uaPfocks
and gave illustrations from Slices with different powers
Of the lens, with the melight on screen hr. Chase
presented comparison between the lunarmonthly ram
fall In the United States indicated by the morning
for three years. and the Pennsylvania Hos
ptal observations for AZ years Prof Lesley preseet ~
Pennsy sylvanla, which have since been more fully en- ,
bodied In his paper before the National Academy o Sc
enccs at Washington.
WASHINGTON: PHILosOPHICAL SOCIETY,
April 1O-Prof Hilgard presented paper on the con-
sruction OF the standard meter OF the subcommittee q"
Paris Of the international Metric Commission. Inc mt
chanical processes adopted werc briefly expinea, '
the remarkably valuable properties OF the aiioy Oh M
um and platinum adopted by the Commission were dwe'
upon Dr. ]. j. Woodward then made some remars. III
oanrcc,ion with communication from DIR. Richardson
of Philadelphia on the possibility Of Distinguishing Ny
means of the microscope between tho blood Stains io
human beings and other animals Prof Ntins Newvo se
short account of the character OF te transit OF Venus
He stated that at no place was the wea t obsery
yOT"be or abs ns might be reasonably
hoped would he deduced from the american Spsc sec
cnd Mr. Ridgway presented paper on the arrsngsS
ment OF the Faconide H esnd p"n the devei
e the SS E ERapen
PuILADELPHA ACADEMY OF NATURAL SCI
pxcrs Anr, lathe President, Dr. Ruschenberger, oc-
rnd the chair paper entitled "Synopss OF the de-
o,;dn by Dr. Elliott Cones, U. 9. A.. was presented
,or rhcafion and referred to Committee Al the re-
ouest NJ Prof Frazer the President appointed MT 1heo
dre Rand on the Centennial Neurological committee
April 2O-A paper entitled Descriptions OF Two New
Fossil Shells from Brazil Ivy T. A. Conrad, was presented
for publication Dr. Lcidy described certain psoro-
spers found in the interstices Of the muscles OF mai
lard duck portions Of which had been sent to him In
elycerne by Dr. Elliott COues DR. Ledy stated that his
attention had been called by Mr. Archer OF Dublin TO the
fact that his Oram6ba had deem described In the
proceedings OF the Dublin Microscopical CLUB py
Mr. Archer who, however considers II merely
an Amrbd rilosd in another condition from
tLat ordinarily observed. DIR. Ledy thinks that
the rigid appendagcs enttle IL to the rank OF separate
gems Two species were characterized and named
Ouram0ba pora1 and o. botuiicGudd. rhzopod had
been discovered which simply minute mass or 1ey
without nucleus OF any kind other than minue
cOntrace yesices. 1t has the power OF spreading itself
In all directions flowing into aments which extend ana
occasionally unite 1t is probably the simplest form OF
animal life yet observed. The name Btomtd rdgdns was
proposed for IT, Dr. Ledy also exhibited ana descrDeu
specmen OF 1.-The sO-callcd mOuthleSs fish or Bnalo
sucker from the Washita River In the usual position OF
the mouth is small aperture abont onetigth OF an nc
in The maxillaries premaxillares, ana the
| lower jaw are absent. 80 -. ,,r,,.o
Mr. Jos Wharton spoke Of the occurrence OF Mlerite
on nickel ore Gap Mine in the form OF crust some
times threeeighth of inch in thickness and OF nhrous
| structure like strOntium Mr.. Charles A. Young re-
corded the of Celcstine at Bells Mills Baii
| County Penn, and described its position ana sur
| rOundings