Delaware state journal. [volume] (Wilmington, Del.) 1870-1883, 1881-04-14
SCIENTIFIC NOTES.


ton, is to be tried at Paris for teaching
pupils the pronunciation of difficult words
in foreign languages.
All ordinary fruit acids are said to act
upon tin, and one case is reported in
which persons were made violently sick
from eating fruit preserved in tin cans,
no foreign substance except tin being
found in the fruit.
Sir Wyville Thompson has estimated
| that the pressure upon mans body at
depth of 1900 feet beneath the surface
of the sea would be equal to a weight of
| 20 locomotives, each with n good train
loaded with pig-iron.
A writer in the DIemish World points ont
| that, contrary to the received idea, the
elder Rabbins of the Talmud taught that
| the world was round. This is shown by
| a passage in which, in discussing idolatry,
| the figures holding ia the hand a baioa Il
bird, or globe were prohibited, because
| the baion symbolzes the dominion OF the
world, the bird that the world lies be-
meath it, and the globe is forbidden
because it resembles the form of the world
itself.
According to the studies OF Hebert, the
storms which reach the European coast
from America originate for the most part
in Mexico, Central America and the
Northern parts of South America; but
they do not generally strike the Atlantic
until after they have traversed a more or
less extended part of the length Of the
North American Continent. The storms
which originate in the United States
reach Greenland, or pass the neighbor
hood of iceland or the Farce Islands. too
far away to affect Europe.
H. ,,r -, ,t,.. ar.,n,,, ,s .,,.il i,
;ntaats P Grst,r ,oms.r 5as,.r;l,., sara,ai
interesting experiments. Numerous
species of insects on approachiur vessels
containing turpentine. or acetic acid,
showed-by retreating and moving their
antennae-a distinct perception of the
smell. After the ends of the antennp
had been eut off. the same insects placed
close to the vessels appeared uuite insen-
sible to the odors. A number of flies,
which had been attracted by some putrid
| maat. showed no inclination to approach
| it after portions of the antennae had been
| cut off.
| ,.i,,s v ,or;,nout in beot 10 nor.
| formed With az, onnaratus devisad Inv Dr..
CO.; NJ a,,,,prat ~ "ons;sts If ibraa
connentr;c vsssais separated Inv annnlar
.nnoas ~ about tbrsar tonrths ,f an inch
| Tha nntsr snace il f1led with oil and tb.
;nuor With voter Tbn oil is bantnd IN a
no;,t abova 30 deqrers Fahr4nbeit. when
H.. ,,at,r b.,ins te bniI nj heofaa IN
| 9no derroes il tbru introduced into the
| centra, vessel. and falls rapidly to a tenn
| perature about that of the boiling water.
| DIR. Grassi finds that this central oil cools
the more quickly the greater the heat Of
the outer ring Of ola result seemingly
very paradoxital.
Tropva,s utilization of .lartriritv in
,n,hi,,at;an NIL snr,,;,.al ;nstrnn,ants Is
l,ar;,,r' rrni, ,nso is ronnrt,d frnm
We IL, NTH. .ln,.t,r h,, .,,.,..ula1
!, ,.nr;n,[ ,anea, in IN, sto,n,et, mainly
thra,,,,I, ~. aasistann,. randnr.d Lv ths
n,lysrnn, IN illuninnting tbe cavity nj
tI,nstn,i,a.I ,rl,a .,l,stri,. ,,rnl,. yl,i.I,
r;nrs n hall ,yh.m a h,iI mr. any ,n4talli,
snhsta,,cs imh.Jdrd in I'm. mnsrIrs is
Reached il ton,,d valnahls a,n,tisit;on
III, ,t,u,, y,,,,,,,,,,s mi mn, ,,,nli,.ntinn al
H. same nrinci,l.. tn snrgic.l tnrc,n. has
i'll p'rftt, 1T, Xxx e,
.is.yawhi.,, l,a,i rn,..iy..a = IN nj
t'ni T,,a .a.' ,,,l '' t.,,,,,,, 80, nr,.,,t
,t...,.i %, :,
'i,. ,,ii n" ,,ra,.,. 49,, ,i,i',.
,',tn ~ iiin..1.i,n,5 ,ti,, ~
;r,,,, ,,rol.,' ani s,I.,.,;,.,,l, '',,,,-,rtina
=; ~" r. -" ,'a',,.., w., ,,,5a,i,,
',n.,.,,. n, 49,, +, ,.it i ,,',,,lti,
nar,i,.ls nnd sa,,nj ,h,,,u. :
f'',a'
me ueath was lately announcer nl Ml
r. a, Nopef', Whosr ll'e rulings ON Gus
nave gwen mn u "ufip Wl"e e'l'ntlty
as test plates lof tne power VI microscope,
ne ruled nalius Oh INES OF VARYING me
NESS from II wy 10 ~ wv 10 tnt hhG'iai
lilcii' ~ was l"finefly nus opinion Una
lines so me as the IL 2,oooth oi an mel
would never DE seen resolved IN lil'
microscope TINS itat was accomplished
however, by pr' woodward when M
Nopeft Immediately produced anew plale,
having one naha oil llies oil Il hneiless +"
"a, ooo to the English lnel. Whethe
or not these minute lines wlll ever "
seen cannot now be safely predicted. Mr.
| NODert has always been very feticrnt II