Burlington weekly free press. [volume] (Burlington, Vt.) 1866-1928, 1869-09-24
SCIENTIFIC.

1t is stated that one hour after the g.s Of Lon
don is lighted the air is deoxidzel ,s mu h as if
| 800 900 people had been added to the popuia-
| ton
/ The average time required for tnger-uail to
attain its tull length (from the root to the COM
menceneut Of the free edge) Is about four and a
half calendar months. The toe-nails grow much
more slowly.
/ Dr. J. ?. Chesney gives a case, in the Leaven-
worth -Nsticai HeraId, occurring in his pras-
tice. where a child which died apparently during
the process Of birth was recovered by long con-
unuet artificial respiration. although IN all sn
interval Of two hours hal interveuei since its
/ heart had ceased 90 beat He believes that
similar effort should always be made to save
/ suli-born child.
Pr.G LyeI says that 100000 Of cubic feet Of
water pass over Niagara Falls every minute.
/ DR.. Dwight, former President Of Yale College.
-ays lto,-1Vuo tons pass over the Falls every
hour. 4 distinguished engineer has computed
the power Of Niagara Fails to be sufficient to
perform all the manual labor of the Empire State
/ The application Of photography 10 the moons
surface has proved that the received diameter Of
the moon Is Zoo great by four seconds. Mr.. Aery,
on discovering this discrepancy, selected the OBJ
seryatIous which were mlie by noting the time
Of 0ccultation Of a star from the time when 1t dis
appeared behind the uneulg ghteued edge Of the
Hsr moon til it reappearei again, and found
that the results agreed to a hundrelrh Of a
second with those given hy photography. The
error had been causel bF he light Of the moon
when fl at the time Of observation. The best
photographs are taken with the ali Of a tele-co-
PIC o3ject-glsss corrected with reference solely
90 the chemical rays. such a glass is worthless
To SEE through; but gives photographs Of the
utmost sharpness Of detail.
a scientific writer says that water which has
stood in an occupied bedroom over nichti utter
y filthy, deieterous poison and unfit for drink
ing The water is a powerful absorbent Of gases
taking in during The night all the poison that Is
thrown OF by respiration. The colder the
weather the more impure the water Vii become
AZ ordinary temperature pail Of water will
contain pint 0- -1rh0uic acid Cls and several
pnts Of ammonia. The capacity IS nearly
doubled by reducing the temperature Of the Wa
ter 90 ice. of course the matter becomes doub-
IS serious when a small or close -o0m Is occupied
These facts disclose another If consi iersibe IN
portau1e in domestic economy during the clld
weather. viz that water may be used al ab-
sl-teut Of frost. Place q tub Of water in a cold
collar over night, and iu the maruiug the vege-
tables VIII be found untouched by FIRST even
though tle water should De frozen solid. Water
I i excellent as "a purifier, but people who regard
I-eir health should De- certain that it Is it~slf
pure before applying it TO the person either ex-
rualig 1- internally.
The llsva and beetle perhaps Of an Eater, or
snap jltk,' aas been brought from Bahia,
and WAS shown az the British Museum a few
lay- ag1. a London paper say w hen seen
ia the day -ht .t j., -umewhai ilse D.. mell-worm
aut more ,apyriug at each end and iather more
-Liu au inch isle e, ola pale yellow r..ur, with a
small feI head There are Ten beautiful bright
-u.leu 4ui green luminous spots Oh each side OF
be- Heis. -iE.ug the stigmata and differing in
r.l.ai.e, a- o., au NAL r,-Iires. tlv i-'d emit
..u- H 80 ...- -ut ruHF -Ht. Ea@ The lamp II
nI.wtt I.r. motive. -he insect often ies Oh its
side. t.g...u- e ruc.l rga.r.iui lamps. with tie
.ry bead Do lrlsrelrre. " Aru r1e .a .ull crtwl
.l TIE IllA. .l uo s- Ike a double ii., VI yellow
.tu--. As ir were. lowing tt- ruby light The
light is mu-h more brilliant ami iL-eu-- Than th.r
.i tl- glow WORN. b85 tbs luii,-i Spots are
smaller.
Dr. Carpenter lately stated AZ ths Royal Nj
el1-g1pcl Sp-ir-y %. London thar -he expedition
11ei out under the auspices uf The oyal Sacir-
Is. for ieeP-sea dredging between Cape Ros-,
~..tl5ni. sui the taroe IslaGl- al
gu euieIv0rei 20 ascertain tde -emuera-
ture ~ great depths. For this purpose they
,gua thSes thermometers al each tra.. and on
account II the uucerttl " Of registering min
lauu thermometers, 30 observation in which at
'al-- 800 1f them dii r,.t sEree. WlS relied upOu
Iasy were much --t1l.-lei Go iad. iH one series
oi Observations, that 10 depth o. 5.J f.th0ms
tte temperature q Tie sea was only - deg
laH-., to- other Observers. Sir John Hers.Lsl
and Ir Ma..icl, h-i Eiyea $50 ie- Fthr. as the
lowest Iesp-sea temperature. This a..i r.mper-
ature did Dot extend beyond 70 limited area. for