New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1850-08-21

ittYy ard the other OF NstarA heDry ani poC
loey This division il less thar Oh former ocoAson'-
Prof HENRI D. ROGERS reported ifom the Osin-
N ,tee on Fees ssd Tickets, recommending ths sP-
: ointment Of Secretary Vho shall bold his oih'e
three wears, and receive SHAY Of $500 and Aso
that the assennent upon individual members IN
addition to the annual payment be 50. The mater
referred 20 the Standing Committee
After some further private basineis the a.socia'
ton divided into Sections and each proceeded 70
The cor sidera,ion oft. own peculiar business
The Section Of Ge Ology and Natural history vas
Organized by the appointment OF Prot. HeShI "
Ro6IRs Of Philadelphia a. Chairman Ffoi' U. T.
HuBBARp and Dr. W. J. BURSLTT a. SECRETARIES
In the Section Of Ply sizes, Mathemat c. and Che
misty Prof BESJ. PIERCE Of Camoridge was
Chairman and Profs Looms and c. W. b ROGERS
secrei,res. Both meetings were Interesting
though there was nothing Of great importance
In the Section OF NGtaral History, connanica-
tions were made by Prof AoAssIZ on the CROWN
Of the EGG; by Pref HUBBARD, Pfof G. Is. AD'
ANS Of Amherst, Prof JoHssOs Of Washington;
and Dr. W }. BUREETT Of Boston.
The paper Of Prof AGAssiz was upon the 'u0lec'
Of the
GROWTH OF The EGG PRIOR TO THE DEVELOP
NENT OF TIE EMBRYO.
protAGAssIZ considered this subject AZ Length De
ginnipg with the obsorvaIiors Ct SchFann. no
SonAidered il Of much ian podance 70 trace toe reia
ton, OF the egg 70 being. This point has oeen
much less studied than the department OF Enbcy-
oloey. and naturalisis have new and extensive
field Of observation before thsm. In coniiiesios
the different parts OF the egg illustrated By van'
Gus diserams on the blackboard, the Prof ssor bed
that tie yok 10 the animal itself already living
ih Ugh only in very inferior condition.
Prof RooEKs alluded to the similarity Of str1c.
lure Of seeds ana pods. Prof Agassiz supported
bis observations.
fRUITLE IN QUARTZ AsD OTHER AINERALs.
This vas paper Of Scientific interest only, pre-
sented BY Prof o. 2. HUBBARD, OF Dartmouth
College. The Professor considered That the period
Of the formation Of the Ruule was prior to the
capitalization OF the quartz, or before any cause
suffcien. 70 cause its qualification had begun TO
operate.
ELEPHANTS.
Prof AGAssIz made few remarks upon the tho
specimen Of fossil Elephants tooth, to which
the attention Of the audience had been drawn by
the Chairman. Until recently said Prof Agassiz)
few or no bones have been found in this section:
The one found on the line OF the Rutland Haltoad
he described as belonging to the Driis period
Being questioned by Prof ROGERS as TO the most
northern locality in this country where Their re-
mains are found, the Professor Designated Bsh-
rings Straits and considered 1t not improbable
that several species did exist.
Prof c b. ADAMS, Of An herst College read
paper On the Nature and Origin OF the Specie,
Of Terrestrial MAlluscs in the Island OF Jamaica
Prof AGAssIz rose as this paper was concluded,
and spoke substantially as follows, upon his cels.
brsted heoryof
THE DIyIRsIrY OF ORIGIN or THE HUMAN RACES
The question Of the origin and nat1re Of species
said the Professor Involves that Of the Unity OF
the Human Race For the same Arguments apply
to Gs 10 the other; and because Il lnvoyes this
question, Nsturslists are in an ark gard point and
are charged with ulfairneSs a7d Illegal asSum2-
tioD. He would max ore remark that We will
work out our matters in tho animal kingdom here
we are on cur legal domsin-by keeping hero all
will come ri ht. Justsse what we are doing in
behalf Of Natural Theology, The concludedl anc By
being the ministers and il terpreters great events.
and yet we are constantly nIerfercd with by those
vhose very vital points We most tend to ProPa'
gate.
- Here the subject was dropped, having been a.
first il formally introduced.
A p.per was presented by Prof WALTER r.
JoHSsoS Of Washington on the " Gold Formation
of May and Virginia and North Carol na," follow
ID by some interesting rema'hs from Prot ROGERS.
DR.. w. J BURSETT Of Boston read ioaE paper
eiving certain results Of Researches the Origin,
Development and Mature Of tbs Spernstic P-f.'-
cles ihrouf h0Ut the NertebrGta.'
Tie Section then adjourned.
The Section Of Physics transacted some inpor-
iant business and adjourned at Al early hour
=
rot time before the closing Of the maisto-night 10
chronicle their sayings and doiDgs. Papers were
read by Prof OLHsTED on some Pecul ar Proper
ties Of a Compound Of Lard and Resin; by Prof
SILLlMAE, Jr, on two American Msteorc lrons
by Prof LOOMS on toe Proper Hight OF Lightning
ECds by Prof HoRsFoRD, on Ammonia 10 Atnoi'
pteric Air and Astronomical diAquisiiions BY
Prof PIERCE and Mr. z SCHUBERT Of Cambridge.
In the afternoon the Chapel was well filed by
visitors. and the members Of the Association as
semblCd in general session. The business OF this
session was peculiarly interesting though less than
half the papers designated for the afternoon we're
reached. The time vas occupied by two oommu-
nicAtioDs OF great importance from Prof HESRY on
the Origin and Classification Of the Mechanical
Powers, and Prof CHAs q. PACE, on his new dis
coveries in Electro Magnetism. give running
sketch Of these papers and the animated debate
which was elected.
TIE ORIGIN AND CLAssIFIcATIos OF The ME-
CHANICAL Powers.
Prof Henry said this was subject which had
long attracted bis attention. All the changes going
on AZ the surface Of TIE earth prod 1ced by what
we call power. A clear idea OF this action 10 es-
sentisl. He though. all action going on around az
may be referred to mechanical power mechanical
power 10 again referable 70 spiritual pover. Bat
We must distinguish between power Anu OfOe, suc
latter being q more generic term. That which
produces changes in matter is true mechanical
power Power in Nature 10 constantly being, II
be might use the term, used up" There mat
he some way Of constant renewal Power may
then be referred to matter in . state of unequal
equilibrium. The speaker illustrated by happy
examples. The idea that the amount Of power 10
the universe is always the same, be considered
purely 4 mechanical h.tion. The measure
ment of power has attracted tae gretteIi
attention in to-me; ages Of the world
Nothing, however has been written upon the 50 D.
ject except treAti,e by Prof WoOlsey, for sew.
eral cara After thinking long time upon the sab
ject be believed be had arrived at the true conca
son. Two classes OF effects one 70 be measure d
by the velocity itself and the other BY the square
OF the velocity, were illustrated by the Professor
The question is, how does il happen that We have
these two measures Of velocity. TIE answer Il
that the Two naIanraa raanl frnn The nacnliar ln