The sun. [volume] (New York [N.Y.]) 1833-1916, 1910-06-08


~ .,,dden,,, A.,,,loD. i,,,, ]. F,r,,, mill,
any tbat has Dr.c,,,,ad n 40 that vbiIa IN
ou. t,,r,, - ~, a., ,u,,,.,,,l e., !. -,
,,,,,,o,,.I,, 5000 81 ,t. s,L -.
con,,nys. 40 90, IN .no,h.r tor,, "a pf.
-. 4, !. $500, -. -, .noo.,-.l
-, .,,i I. -, ,.,,.,,,,,, .,,,.,,r. ami.
1T, ..,,,,,,i,, ~ .,,.,,..' 4. A.. term
-hioh ~. 49,, .,,iv.I,, diW.r.n, moan.
in1. Tbs ,vDs NAV b.coms extinct
by diving out and leaving NO descendants.
Or Il may die out because, as the genera
tions 10 by. there IL change, slow or swift,
until a new form il produced. Thus in
ono case the line Of lie comes 70 an end.
In the other case il changes into some
thing different.
The analogy between the facts thus
Indicated and certain facts in the develop
ment Of human societies is striking. A
further analogy ia nnpplled by a very curl
o,,s tendency often visible in cases Of
intense and extreme specialization. When
an animal form becomes highly special
Iz.d the tvpe NJ frat. because Of its spe-
cialization. triumphs over is allied rivals
and its enemies and attains a great do
veloomept until in many cases tho spe.
cialiEation becomes 40 extreme that from
sone cause unknown 20 us or at which
We merely CUES. il disappears. The new
spaciss which marx new era commonly
come from, m. less sDeciali,ed types. the
Ie.a distinctive dominant and striking
ty,nsu ~ the nracaSing era
.,,-r,, ,,,,.,,,,, -y.vovs
: -. 49,
IN many c"S W Va'iu'' '''',Nl
n~A-u susss ~ ~ ny $50 -' ..i,..
occurred. Ohe OF tne mus 'IHlns
instances OF tnese ln7Apu.'O'o O''s"soa
j. ua' euo'u"u y ''i0 n''.',y y. .,'..'
America toN@Lu 'n' O'oss .. ti'o vo'' !,
'eriOo' TOT IOu'n G.oN- :, Ia -.
o''eh an isiano ny ''ss''' Ou' Uu Iiunl ~"
America AZ 'he 'ery ,''n7 '"a. '"r 'N''s
was az least occaAonaliy IN lana cofnfnuhi-
cation with Asia. During this time q very
peculiar fauna crew IN In South America.
- ~. -. ,.,..,,, ,l,,,,, r,,,bin, ro,v
@"s'u "a ~, -. =
exisNng' WINE o'ncIs @ic EeO" SLY ~
ancestral forms Of the anteatcrs. aloths
and armadillns Of TO-DAY. Il was a Pc
.,,Ii,r and aiy.raifed mammalian fauna
= ~. .-h.,.. .,,h,- .,,,.I .y,,,,,i.,.
o. ON .u7 ''7' 49,, -
ana without any Iepresen'a''. 81 'ne
animals with which man has been most
familiar during his career on this earth
Toward the ond Of the tertiary there
was An uDbeayal Of land between this old
s,,,,,h .,,.,r,Can ;.land and North Amer.
'''.' -.'''.,, 49,. t..,,..,,.. =,
lca near NhA. no" ' W
Panama, thereby MAKING oroge acruas
which tho teaming animal life Of the
n,rshern continent had access 20 this
- .,,,,h.rr continent Th,rs followed
= -. .,,r y.
an luTurh " ""se u, 'N "
creatures which had attained thelr de-
velopmsnt IN the fiercss composition 81 the
.ro,,g..l raalrn Elephants cameIs
- -. -, .at,,, ,,,,,b..,t 4, ,.r.
mug cAts' Vows "o''e' "e' '''"'''u
into south America, WARNS each against
the other tncomers ana against the 90
long eNs sung IortnH. Llot nl nie iGl-
lowed. Not only vas the character oi the
south American fauna totally changed by
the invasion OF these creatures ron the
north. which soon swarmed over me con
tinent. but u was also changed thrQugh
the development wrought IN the old IN
hahitants by the severe couipetltlpn 10
which they we're exposed. Many 81 the
smaller or lees capable types ded out
Others developed enormous bulk or com.
plcte armoT prOtection ana ther"hy saved
themselves from the new beasts.
NEW FAUNA
I'm oonssauence south America soon
became populatad with various new
! sueoies Of mastorons. sabre toothed tigers
csy,,sls borses deer cnts. wolves. roc fed
! rreat1res 81 strange shapes and snrne OF
Z them on aiant siya. an OF these being
/ deacandad from the immigrant tvnas.
and si5e Nv side with them therp grew 40
I iarge autSchthonous ungilatss. giant
1 .TrS,,Dd slotbs well nigh a. large as ele-
I 5hanta and arrnored creatures a. bulky
- an OF mt structurallv Of the armadillo
or ant eater type; and some Of the-e lat.
/ ter mot only held their own hut actually
/ In their turn wandered north over the
isthmus and invaded North America.
/ A fauna as varied a. that OF Africa TO-DAY.
a. abundant in species and individuals
sven more noteworthy because OF IL
huge sire or odd type and because Of the
terrinc prowens oi me Hl3Io l0rhidaole
hesh eaters, was thus aeveloped ~ SCUM
America ana nOurtsned Ior peTi0u which
human history WOulu can very long III
deed, but which geologically was snort.
lhen tor no reason that We can as-ign
destruction feil on this fauna. All tbs
great ana tsrribie creatures dleu out the
same tats oetaliing we chahged repre-
sentatives OF the oh aut0chthonous
fauna and the descendAnts OF the migrants
StiAN 49, 49, - .,t
49, 4 i - :,
A. n a -