New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1847-10-20
.., ,.,v individuals are united 10 one and the
- ',vh;i. c,hsr. remain single.

.,s., r.nv individuals are united 10 one and the
same stem while others remain single
The importance OF these animals IS yer! s'e"
frnrn the well known coral reels besir thest o."
insls act IN a very extensive manner 10 fn"ui WIS
a. .b.Se. Of the oceans depth They contribute
IN the f,rmation Of IS ands and IN en'srging cont
nents bv Increasing the amount OF hard substances
ss,o.i,.s ON the surface Of the earth. We Ano"
from geological researches that whole mouh'sl'
ranges have been formed by the agency OF ta's
minute animal But this . not the place IN winch
t. speak Of this geological phenomenon a'.-o
70 Il; at present only for the purpose OF sno" 'e
inheritance OF the functions performed by this niue
animal in nature. There are some pOlyps ~hien
produce eggs ana buds bat u Is only some oi ne ia'
ter which can IN their turn produce eggs great
many Of the animals classified m the tnfnsoTiG are
only eggs of polyp. snd other lower animals s"im-
ming freely by the agency Of their yloratory GINA
which covers the surface OF the egesncN ne
seeds Of plants are in the same way covered y
ella and moving freely IA the water arr ais" often
clsssed with the infrsOria. There are plants
called c0nfrrd. divided by partitions in the msn-
ner which ! have described, aud the seeds are
covered with vibrai0ry ella. moving so iIecH
In the water that they cannot be distinguishes
from the lower animals. They are 50 minute tnA'
all ex summation Of their internal structnre IS mat
ter Of very great difficulty. II we could only as
certain whether thew have a stomach, thels posi-
ton among organized beings would be very es,ily
fixed. But as they are 50 minute that the highest
microscopic power discloses only these vlofatory
ellis and as there are animals which have been
discovered to possess stomach very cioseiy re-
sembline them in external appearance, II IS very
difficult indeed u determine whether they belong
TO the animal or vegetable Kingdom.
LocomotiOn. as such. IS not distinctive charac-
ter OF animal life. 1t Is ony the wil'ui morton
under the action Of nerves which IS characteristic
Of the animal kingdom. But ylbrstory motol' pro
duced by these minute hairs covering surface OF
minute animals and plants. IS common 10 organ
lied beings In general and - found as well IN the
vegetable as ia the animal kingdom.
P0lyps are divided intOt great families the &C.
fenia in which the eggs arranged IN lunches IN
ternally and hydr70dd which have tentacies IN the
same manner as the others. but In which the eggs
hang in punches externally from the lower end OF
the upper cavity, in graceful forms and sometimes
beautifully coored.
The hour is now so fer advanced that cannot
enter into the consideration OF other classes OF "a
dated animals | shall take them up in my next
lecture.
The Professor was listened throughout with the
greatest attention. His manner is pleasing in the
extreme He is an excellent i0structer-lucid,
practical and plain. Professor Gilman and his as
socses deserve great credit for their efforts in OBJ
tanning this rich treat for all who take an interest
in natural history. The public evidently appreci-
ate these efforts II the audiences increase as they
have been increasing much larger Hall must be
obtained or Professor Agassiz.