The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1856-08-26

wife Of Prof Foott and the paper the heat OF
the determination Of the different circuu stances That a.
feet the thermal action Of the rays OF light proceed
pump two cylindrical receivers Of the same size
about inches in diameter thirty in length In
each were placed two thermometers The air Wa ex-
hau,ted in the and condensed in the other and
placed in the sun, which affected each differently The
paper was a scientific exposition Of the subject creds.
bic 10 the lady and beneficial 10 science
The section then adjourned.
GEOLOGICAL SECTION.
Prof WILSON in the chair.
ACANTHoCEPHALA.
Prof wEIsIASD read paper the organization OF
acanthocephala He said, in substance
The anatomy OF worm would seem matter OF not
very great Importance But those who have followed the
development Of science have that many little parts
in the animal kingdom, and particularly observations
made the socaled lower animals are Just those upon
which rests great part Of all physiology aud also that
man All be socsss nssco worm ios
producory well the digestive respiratory organs
in the most simple form. There must study FIRST all
those processes which 60 in what we call a living
being. Two years since very strange discovery
made in an intestinal worm in relation TO its reproduc-
ton and now this strange fact has become law through
out the animal kingdom, including mankind. This,
think is the true view Of these called lover ANIMALS.
intend to speak today on the digestive apparatus Of the
acanhocepbala sub order of the which appa.
discovered last winter There b. ye zoology
NAMED still large number Of animals which said
have distinct digestive apparatus And this Is GER
iainy true Of the raisopodes, family of infusoriahe
rbzopod. Of perhaps llOoth q line in diameter-a
mucous matter. which may now have the shape Of
roond ha' now that OF star without any ssn around
It, but with gobules IN IL body, which are swat
lowed food balls. We remark its margin red
dish dot-ihis reddish dot is heart for it
every minute Now how does th, animal feed There
is no mouth, no intestinal canal A friend Of nine Mr.
Capable, has seen II eating When another iufusorium
(or the food Of the rhi7opodes) comes into
its neishborhood the rhizopod at throwing
all III body IT, and in the second we the
prey the centre OF the rhzopod motion begins in
the body, and minute AFTER the eaten nfusorum is
shapeicss food ball have seen this my self
chance for eats only once in about hours. But
higher than the nfusora who feel thont mouth and
digestive apparatus by mere inhibition through the
skin. among others. till lately all tho sub order of the
acanhocephaous wof,n have been considered having
no mouth, no intestine But last winter found q mouth
aud two intestinal starting from il and hanging
down into the body, in four different species Of this sub
ofder and we can state from analogy that all this sub
order has digestive apparatus III that other suborder,
uematoda Its generally being found empty may &C
count for IL being oyero sed for so long time by natu
ralistE Dr. Wennd then exhibited the drawings OF bis
observations Oh helnintba generally.
TIE rea6n OF this paper led to some remarks from
Professor BRocaLssBY wh that opportunity of intro
ducirg specimen which he hal discovered aud which
Professor AGAssz paid Professor weialand high
rment on the value OF bis researches and generaizs
Gous.
ANIMAL rxvBroPRYxST.
The neyi srbjeci IN order vas the communication Of
Professor ACAss2, Animal Development The learned
proes or Goes lot write, but speaks without single
rote.
bis teiearches upou the al important subject OF animal
ceyecl emeu which, as was KNOWN al engaged his AT.
dersiandbg OF what he would say would divide the
subject oto iiee pars-ls, TIE egg I'd TIE germ; Sd.
bre ccled ann mails
Tie general result or all investigation into the subject
o. animal merit had led to the establishment Of
tie broad tact that 81 apirnals sprung their gin from
the varied pes Of animal life, to the highest order of
vertebrate animals and man bm,ef the rule nva
'ahy tie sBme-thr beginning OF life egg. The
prncipe might be carried further. The egg was in all
cases similar IN appearance 6. some stage OF its
deveoremeEt II microscopic at first so inantes-
microscope
ipg OF two thousand fold TO recognise it, structure
AZ this stage a yolk bag, containing within
ia all ,bis vesce, when closely observed OBJ
served 10 be marked VIII DARK dots Now such beor
tie facts dscl0sed BY physical Observation the questions
suggested themselves What was the egg. How did II
originate our Investigations have led deter a
striking analogy between the various eggs hitch
sources Of spmsl lie at elementary point IN their de-
veortment BIT We must not stop here rh ugh twenty
br) first startled the world by the discovery egSs ia
n.mUala, hut little progress has been made. Tns
he first step the path We make further luvest
cations and ascertain u we can how the egg originates
wbat Us rnaiernls how germrates, and whether
there be period when 4 contains no germ.
Evidently the course 10 be pursued In e investigate
Now, al parts Of every Known plan, cels-
baes IN a worc-kimlar every respect 10 eggs. An
egg eniy cell Of particular klnd, different rom
cells by tt.ng destined u give rise being
Plants wholly composed Of cells Nay, more; the
BODIES q animals themselves for the part, mere
cells every knows that the muscular and nervous
tissues ces And thus may be broadly stated
hat DOT only there striking anslogy bet@een the eggs
OF all animals at period other OF their develope-
men, but all these eggs bear equally bng resen
baLce TO the germs Of plants and 70 the structural
Of al oreapized beings, whether animals or plants
all organic structures In fact cells This fact
mu,, be carefully borne 10 mind in the inquiry into the
origin of the eFg
ihe learned Professor then proceeded 10 show on the
blackboard how one OF tie sim pc forms OF sawed
piopagaied. lie drew a sketch ola weed, somewhat
similar IN sbepe 10 elongated pea pod This was the
adult pisut Then he showed that this plant was divided
by Partitions into different cells throughout the Who'll.
OF length. In these cells there were, he showed,
mail dark tpecks which fret could only be detected
by the Microscope some OF thesesometimes one some.
tm,s iso or more-wood gtow and enlarge iii they |
Isolated them,lves cm the pant and assumed the re-
fporsibbty CT 81 parat existence They then n
tluee eel, Ike all the other cells marked within by dark
speeks Amer tine this embryonic plan, would enlarge
ara SPREAD IN this instance, ongi,udinally It would
grow 70 couble the length i had whom cut itself adrl
rom tie parent weed But the cellular system was |
naLiaLed the moment II grew TO a certain length. a
pariit'I and afterwards several parttons-di yided
INTO several cells within each Of which The reproducing
agent the shape dark specks was distinctly visible
With the microscope. This the plan OF reproduction
IN tbs order Of organic structures. 1
To pass TO higher order. The Professor took CON-
non hons egg, as familiar illustration OF this. Al nrst
tie egr Is only visible With the aid Of powerful micro
cope; Is mere yolk In bag AMI marked a. before
With certain dots After tine nebnoUs lud appears
tosurround II the casing Of uid thokcps and H. Ia rs
turn, protected BY casing Of resisting substance
10 short While becomes the egg with which tho break
fast table 50 familiar With ,s round yolk in the middle
protected by an elastic skin and beautifully suspended
Ly cores 10 either end Of the egg with the White fluid
Outside OF this and the outer coating shelroverinr all
u was ipBslbe 10 watch tbs process OF DEVELOPMENT
without being struck b. The analogy between the fowls
egg srd The srsnulc IN lie vegetable.
1htn The question returns how this osg made Take
bottle, half GU u With Oh, and plt little slbumen into
II: shake well, and yon have eggs. The oil will form
round gicbrles ard these will be coated with aibamen
There nothing msre 10 the egg The contents or the
peculiar appropriate rec pares the bodies Of animals
nothing bet fat oily matter, and abumen which
deposited and accumulated there There doubt but
ePgB may be formed In various ways and he was
from asserting that this was the only paA by which they
made But for he most part eggs gobules
II tat coattd with abnmeD combination the living be-
ing Of thete substances uncommony ike the oil al
bumen in tie bottle The lst process the ISOLATION OF
the OIL from the surrounding part when the bottle
shaken The stcord - The graaua deposit Of albumen
the exterior surface
All cellular structures, which isolate Themselves from
the parent animal In order that life may be given 70
in vGuals Of the species N fact eggs eggs
ct ncaliy tie same throughout the animal kingdom.
There incidental and mmateral differences For In.
stance. the esg Of bird " stl egg when has
ACQUIRED considerable mass; whereas the egg Of
ID N h nAaIlh