, 1864-02-13
METAMoRpHoals OF ANIMALS.
Tho Origin of Animated NefnEs
-IdlcMutfftn. tSlm1lurlticS,
atsltl Dl1ltrcnccn.

Ntyan 1fstl WAS crowded last cvoning With O
large and npprecihtfra nulIence-lasgof than at
any preceding lecture Of ilIp courso-who listened
with untked attention TO Tho ti1lrd Iocturc Of Pro-
fesscr Aeassz-" THE MeiamoFphosls Of Antmals."
Tie learned FrUlesaur WAS introduced 10 tho au-
dlence bJ j. 3. 1loegelt. Ksq., and Immediately
launched en his subject
III rifros ed ~ consider The growth Of animals,
what ;!'hees They tl,deteo rum Tho earliest atage
Hnlil they hare finally compleed tl'olr existence,
tIte anln.sl cteAlUn-the faila,a olInsca, arttcn-
lats, ard ts1tttlals-and tleto afo only tic same
1ars. All antmnls. Without Exception, a1ise
tlun rfgr, which sso adcnt1cal tn structure.
sa re ta.ey = o' .Pae Pi9d Gho f as; ae1 at!sa
sn,o,e tiic1m IL that eomo lay erea 9uetGnse Thes
small othczs when lasge and some do not lsy any In
as ss ss 81 ssRsss e
natnmala. The drst beginning Of an ceg is a yery
small substance. scarcely d1scernible to The naked
InEsparent dald thickcns, md M bscomss 'g studded
with spseKs ard IN manner loses Its transparent
bss s aidsf s as Ct h9
animAls The onteF coating, becomes thickenede n
bi1cs it aesumes yeI1oWiah hue and an oily ap-
soE egnd bss about '1i Wlts1 !: sstu Afeaaa
whe's sRslossa s Il RI esesIeo9si ehell h ths
isrent 1ofmations-one for the large egg, one for
the email, one fer sadiata and ono for vertebrata
ana a II tefps 81, Is formed OF cells
5,est'f1tten ,1 1ba msqe md T. H., lsa5 The ssIl:
in various ways The yeE updelaoes %1agied Il
divieton previous to the formation Of the rer, IN
ne eege Of birds en ipdentation may b clearly
vide the yelk. These divisions aIe again subdi-
cen drde aRa s keeps going On until It
again divided into 1he he1ssohsi ces. Til pro ate
es5s nay cG q On through the entire yelt o. only
tive than tn any other part Of the yelk. Hers tho
speaker described the growth OF tho eggs Of the
changes going On IL tbelr gseS' y rhe
growth Of the 5elIy, frst WAS very n,inutely d.
ssaes6 shcTpg Tb'4g the tG'a.on q he ss "a
Is rs'1t ST o. Of IL sectio1s, each one forming
species Of the Iadlata, which produce Beings dis.
similar to Themselves hut are again teproduced in
third generation. This is what naturalists call
sSeoped n msnne. 4s e. n9asa a1e
hs IN tbe ariicpata the csss Is The seve4sa ' Ths
like eEape. The young butterfly Is caterpillar.
III, II ,isnges nto ehIJealie from which issues
Ed1 he Tss Hsse s[as9s
th1ee classes-the worm, the crustaeea, and
The The insect The frst is the lowest and similar to
sne tonng OF ne highest, The, c1nstacea Ii
tie second class 1s stmi]a- t9 lie
middle state Of the first class. This metamorpha-
e3s bag given us great facilities for the proper
Giassdcation Of the species and genera Of fanimals
The common mussel Of our rivers is superfor to
the oyster because In fts carly stage 1t IL similar
mentioned tho case OF the tapoe tu1ning into the
frog clearly showing that the latter ranked higher
thin the former.
Tee fourth lecture Of the course will be delivered
this evening; it's subject, 'The Standing Of Man
IN Nature" Thus will be the last lecture, and Will
contain the deductions made by the phfIosouh,c,1
naturalist, from the hca described in tho lectures
preceding.