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| December 19, 1940 The Catalina Islander |  |
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they are geared happen to be removed
Stratnts-- on t ,n,oraril,they s(iOll le&ch the fa-
il P0pulat,on- i
supply. As a matter of fact, limitations
of space and food are often involved
|` ~,te~~t~-~.~:'.z~:t'~.~ "finalbUt thatdecisiveness.fact should not obscure their
~ u~sttirt f us know the ohl story a.bout .When restraint of population is
'~tcL g chickens before the:, are mentioned, probably most of us think.
~ed ~ent adaptions as those ap- s L i
~r "muhiplicatio,~ of rabbits P
.a / . * y
~e~ apt.gs, fhes and the like. Through pressed by.examples such as that of
~%s a~,d throulzh our own observa- the Americ~.n Bison, which once roam-
ree,~.'m. experiences we have come ed over the North American continent
~at ~n.lz.e, at least vaguely, the fact in vast nuinbers, but which quickly
lh nuva, lWmg thing is able to expand approached extinction under the at-
~'er~ oers without limit, Man offers tacks of hunters and the destruction
PAGE N,
~~~I~I~u~i~"~u"~ llillmlllllllllUlUlllllllll~llllllllllilll IIII IIIII ~lllllllJlillllllllltlUllplllill',lllillll,:~
,-.
DI STI NC TI-'VE GIFTS
Wiching y ou
rrrl!
hi 'l i2testraints to increase of cer- of l,astura e o,e 0r, there are other QIbri tma
influences which may operate decisive-
~, ~.qs of populations, including his ly in many cases. The influence of
~e. nut Nature imposes infinitely lack of water is even more striking
than that of lack of food in many ~' "i
teachin~ in Stockton High cases, but the importance of proper ~tu~!~I~I~INII~!I~i~aN~I~II~I~N~g~I~[~II~I~HR~N~u~R~i~R~N~$~I~ii~I~i
ago, one oi nly Biology
condition of the water is not so ap- t~ "~ ~ ~* u. ~z
the question as to speedparent, although it is easy to see that
('fParanloecium, the micro- if the water contains too /nuch ,alkalr, ] Brooks Pharmacy[
~a so commonly used for or other injurious substances, it may
r~c~ of study by beginning
l~i logy. We assumed first prevent the spread of certain popula-
tions in particular localities. ~ .-
an tal could become two in One of the most striking scientHic,New Merchandise Friendly Service Reasonable Prices |
~r hours, and th~.t the two discoveries in the biology of Nature i ATWATER ARCADE - PHONE 122 !
)nit four in another twenty-in recent years is that animals, as well ~''~''"''~'"~'~"""""''"'~'~""~"""'''''"~'*''~'~'"~""""~''m'~"""''''~"'~""''~""''""'''''~m'"'~"~"~'""~"~"""~''~'"~''''"i
population doubling every as plants, must have small amounts
ar hours, IF ALL CONDI- of certain substances not ordinarily
~u,ld be kept as favorable as sut)posed to be necessary. Many of us
ning. At the same time,
how long it would take
tins creatures to swim a
long after watching
)ss the field of view of the
From our series of cal-
two fiuallv concluded that a
oekton Channel could be fill-
solid mass of the animals in
than it would take one of
that distance (if it could
enough to do so).
tree, such calculations and
are silly, except for one
they force attention to the
al ponulations can mul-
know that iodine exists in sea water
in traces so small that only the most
expert chemists can find it; also, that
it is obtained by sea weeds and built
into their substance in quantities avail-
able for commercial extraction. We
may have thought that only sea weeds
were capable of so great delicacy of
operation, but it is known today that
many land plants can do as we[[,
sometimes takin~ from the soil materi-
als that are dangerous to animals as
well as benefieal. Some of us know
that certain human disease results from
lack of iodine in drinking water.
One of the striking applications of
there is space for the newer knowledge concerning the
or food to eat. All influences of traces or lack of traces of
geared to meet some particular chemicals in soils, waters and
upon their expansion,foods, is the development of a theory
'~ ~ ~ m m~ ~ to explain the cyclical fluctuations in
I~]~|T~ J~'WI~'L~Y/ numbers of rabbits, mice, birds etc. For
example, in the ten year cycle of Cans-
at dian hares, the animals gradually buiht
up an enormous population which eats
Angeles Prices up the food plants capable of provid-
~ in~ traces o needed chemicals. Be-
P" I)arkins AtwaterArcade cause of lackf of these they contract
"~-~'~" liverdiseasewhich kills "themoff
1
J
I ~ wholesale. Then the surviving hares
I t1~~ and appropriate plants start the cycle
% allna Hospital [ anew The theory seems plausible and
~lit gives an excellent illustration of the
del'icacy of adjustment of living things
to the conditions of living.
--171--
1~" OUR LANGUAGE~ GROWS
Some one had asked the qucstio~z:
I I NNs'r--"- WINDLE T, whom d,cs praise belong
I NOTARV For nlakinv- ;,nlan ,;otln~ :J.s fair
And beautiful as VOUllg.~
PUBLIC " hen a,ne ,e .lv
"The eosmetulo