Evening star., 1949-05-16
Liquids Are Transformed
By UItrosonic Radiation
Strange ChsF,,esl Changes Fassisd
During 'CA>atntton' rs~Seo
Rr Ta~mss 4. 9fxwrY

Nara Rsscxsxn s&aaeasssy Srsefa4ass 40
sFo2rtng strange ssstssssAa tras1k5ossszA sesss
sf .ntease astsaAarst raaAE&cz et 80 assssa
<hs u,s+Awan3e ~8sxs gsrs4 ar rrnvsssss
b clEstS eF~ssa2 a trwssFEsgy 81 49,
n7a cFr3rt . snSsaa&. 50 lzzssA a+vstFr tsam
;Ar h3shes& pitched acara at aaae 50 Iss
human r&r. Tssr .rsFh>sst Es 1ne a9. iaTses
Esr~aes tar rsAg IS 9Hs -e.s5e*g a0.4asa sss-
c@Tshss wah@~t g&Sr
&snaasarE accossr ~ snr=t avpsft 80
The C3srsrscas Snesets ct WAsHtaksrn - -
Af;~c Ne.~ss1 6, Ehs &aSasa&ars sfs- s.
iae "a, -rt 20 ra~res e. EaArt =-c5rys.ars c5
po@tstrsorf a. .rspes ART nc c~.ts "a g-astas
Ihe Name th.as EApf<rr1 ~E2A e2he. ers.
444o& a. adhesive raAes 'feEu eottngt
sri q ssosv thAn 900 ssl,<s .srss&a "a,
been car * e~g En TssAss4re ter Grse..rf a.
so~sne IheEatec hy 4llaNauas sReea tsnfa
Watfs solutions
TIE chemical tsaasfos tssA szosas Az h,z4sfl
about - Re.ss.vf fo.snc or, IN gAs r.rs-
eEce ~ "csF@t&uor T-sgs j. Ihe fcsynattVa
and violent collapse e. ANAL h4ea}vs a.
'&e@GrnA n re AGus1 &c te the trrrur1eSus
changes of pressure rG-~rd a rfs4.ran t3susa
each seoond by thr 4Hsason}r saves
Ths eAsataunn. he says ao<s nrt axe
place In liquids from ShsEh a.. l.ss & 5Nse,vfa
FasSFs have ecen enfrfGsy removed b. se...
10 violent arr tt2s effects ef tfsr s.EIsAsog,se
wares passing thrhuEh Oh Jha = ,oarts n
Is ta5oSH. up tpot ot gners r. ottrg
cases foe Is formed eyrg he a.3tAcs al a
Aeud
me possibilities a. u!t;asoulc chemistry
VAS explained WIRE studied e&feuslsrEs sa
Germany before ths ~AF hut the Natns Re.
search Laboratory wofksrs are rnatns that
some OF the conclusions O. the German
chemists wetv quite wrong
There have been SIX notable ehAnEes cf
climate since the end oi the last ice Age
This can be determined from study ~
fossil pellen deposits In peat hoss and lake
bottoms Tn Nvw England according Ia
report to the American oconhys4cA. union
here by Or Arthur s. Knox a. Tire unltrd
States 0rologtcA survey. APPROXIMATELY so
sites have been studied to date
The climatic changes are shown hy tie
varying types OF predominant NeevtatiuD.
First came the pre- BorrAl a cold wet psfied
while the Ice sheet was disappearing tvetn
eastern North America abou; 10 ooo wears
ago. Spruce and scrub pine forests covered
much Of the Landscape
Then came a dry pcrod Wsth piue forests
marking transition Iron spruce 20 hen,
lock and dectduous trees This was followed
quite quickly by the Atlantic eg&od WetteT
and warmer than the present dUIlnE which
different types Of forests appeared over The
New England area This Mas followed by n
relatively dry period daTlns which brat
loving plants enjoyed the best conditions
they have known IN this part oi the country
welteT and colder period followed v3th .
general increase IN spruce The next strp
MAS 10 the present. which u somewhat
warmer ana dryer.
The New England picture Dr Knox sash.
seems generally 10 parallel that shown by
the peat bogs OF Northern Europe. indirat-
ing that the forces producing these timsue
fluctuations we're general over much Of lhr
Northern Hemisphere. The periods we're OF
various lengths from isS hundred 10
more than , 600 years.