New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1875-04-05
PROCEEDINGS OF SOCIETIES.

SAN DIEGO: SAN DIEGO SOCIETY OF NAT
un.t HISTORY; Feb lo-Dr q. W. Barnes cxhibited
several specimens OF nfusori and vegetable FORMS IN
cudins Rohrerd raigdris, PdrdmeeWm Aureitd ironds
Of CoVcTeG Sc, VITA ex9lAnauoas Oh tue na"'"' ""
eharac teristics of the So nt'rosc PIC oIgdhlsms
PunApELPmA: AMERICAN PmLosopHlcAL
SOCIETY March leMr Frazer described and discussed
the organ OF certain beds aud belts Of mone In south
ern Pennsylvania with the help OF eolored map oil
York and Adams counties, and geological map 90, "u
PENNSYLVANIA. Dr kOai- and Mr.. L"te> spoke on "'0
same subject.
BosToN: AMERICAN ACADEMY OF ARTS AND
SCIENCES: March e-Tae Hon. Robert G. winthrop ap
pointed delegate represent the Academy at the ap
preaching Congress Paris called by the Gsograph'cai
Society of France. Pr0E A. Gray communicated pa
per entidcd. ConsPectus OF the Order Hydro
ptyllaccp. Serene Watson communicated descrp-
tcus Of new species Of plants; Prot W. q. Flr!ow
LIS II tue marine aige OF tbs United States Win re-
M Is and characters OF some new species Charlcs s.
pcircr made detailed communication upon the 'ISh OF
stars aud the means OF estimating th' " Gus 'ae' lie
theory q their distribution IN SD CO. aud Tue pODIOe
form Debula 10 which our solar system DcohRS
CHICAGO: ACADEMY OF SCIENCES: Feb. w.
report was presented Mr. Batcliord on tae f0ria
expedition recently sent out by tie Academy under inc
direction OF DR. vehe for the purpose OF MAKING eoec
tions for It, museum Tie party LETT Ne"-OfleahS on
the 2oh of January for the Cedar Keys and Key west
and after remaining for short time at the latter poiut'
proceeded TO Tortugas where il Is now engaged moro
particularly in securing specimens Of coral s'mo ais
cusson took place during the evening In regard 10 vac
geological character OF human skull that had Dsen eA-
hbitcd the previous meeting With the assusanGe
u had nccn found IN hOwlder ann near tne ss
RIVER az ottawa DR.. Andrews stating that from Wa VIZ
he could gather was actually fonnd IA 'hr rVoa nn
and Was, therefore, not or - grcat an' Iu, a. o
been claimed Dr. Cclert wade comm IA , re
card 10 The transit OF Venus in which he stated maj %
anal deductions fr In IN, observations co9ld only DE-
made after careful COInpaiisOA oA "da HaH '00- "0
IN diff rent parts of the word.
PHILADELPHIA AMERICAN PHH0SorHICAL
N.r.b read n PAPER by the THE,
svuopsis OF the Vertebrate OF the Mlocene OF Cum
berlund County, New-Jersey. Dr. CIesson exh'b'eo
map or diagram. arranged on vertical SCALE 10 repre-
sent the FIVE coal beds mined at EUangowan' near
MahanOy Ciiy. representing the thcAneSs ana suouNs
ions ~ each bed: and horizontal scale TO eXOit
the proportions Of the various chemical elements Cd
tanned by ANALYSIS OF tho mammoth bed, the uppe-
most group Of four benches al EhngOwan separated
from the group OF three benches by 100 yards Of
rock aud the middle from the lower group OF four
benches by equal distance al three groups lying
together without ths intervention OF rock measures III
the neighDOring coieries each ste the Total thcK
ness Of coal remaining always about the
same d.. Cresson also exhibited aud ex'
planned an American modification OF Bun
sens apparatus for determining the specihc
gravity OF any gas and the obstacles 10 accuracy OF the
Investigation when the given gas was either much
heavier or much lighter the common air into which
II escaped Prof Chase being referred to- said that he
had been n uuesed by Dr. TO experiment with
the instrument IN order discuss its eccenircties ana
had used the city obtaining various curves o. We
locity Of exit when the uppermOst aud owermOs or the
two or three or other numbers 0f inches az the top
or bottom OF tie tube pared against each Other
hut without entirely satisfactory results. he cOnsid
cred II proable that the causes OF irrcCuarity fell
der three heads viz: FIRST the difference OF density or
the medium into which the fine jet OF gas issued Through
microscopic hole in platinum fol); second the vai1a
bic spiral forms which the sal currents must I've
thr lwn and, third. friction, varying with condensation
inside the instrument whenever the general tcmptlt
ture Of falls To this latter cause he as
erihcd ifrenccs Of results obtained in the morn
ing aud evening. amounting TO 20 per cent lie
thought that under favorable circumstances anl
be made within two per cent ana muru
closer than with the Bunsen instrument.
Prot Fl communicated the fact OF the discovery
OF titanic IRON IN tue form OF perfect crystal ana OF ~
usual malt an inch lido associated with emo
rite. il chronic iron - Fronh Woods nine In Len
easter County Penn The specimen - ~ the possession
of Mr. Lyon. near King Of Prussia. Chester county,
Penn. small portion OF the crystal was submitted 10
the blow pipe by Prof Brush. Prot Chasc read letter
that he CXp cts to ehtaiu the appOinteht hY Govern
meu salaried officer entrusted with the duty OF con
tnuing the meteorological UhScrVa lens at Barbados,
the importance of which IS made the greater ny tc 1act
die OF the Atlantic cyclones and tornadoes OF
the Cuff OF NJ eXicO. Prof. Frazer deserlbcd
some microscopic sections of trap Glkes IN the
ncsozlic red sandstone Of Pennsylvania ana COnnectl-
ent lie had taken specimens The vicinity of Get
tysburg both slides and Fragments TO New Hay d,
aud compared tuem with similar slides ana fragments
OF the Connecticut traps the possession OF Mr. b. 3
Dana. There were hlegrained erceniSh dolerites eG
scty alike ia both localities: cOaISegfahed gray rock
which Fragments seemed identical, uDder tue ulcfo-
scope showed diff renee between the Connecticut aud
PeDnSylvania NarietIes-hat OF The former being
merely a coarse grained doleite, while that OF the
latter was "a true syenlte.
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