New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1851-08-22

~ bv sand-of d diameter varyl1r buf
slightly from Go6 and Of variable lengths - suit
Tho Ovlects Of experiment.
Nv first object was 90 ascertain whether the bar.
when saturated. had increased IN SPECIFIC gravity.
Bars Of lead. after standing n cup OF mercury
uutll thew had become saturated N.tl ilf 4dliti
metal were taken out and carefully scraped 70 re-
move the surface coat. and the specltc gravity de-
ieTmIned N the usual manner.
These results we're cOnfctng-ior reason nor
altogether clear 20 me. and am now unable 70 say
whether the specific gravity remain, unchtheel'
increases or diminishes, "iih the addition OF mef-
cury.
The following determinations were made. They
seem to indicate increased Specific Gravity.
Sn G. Of Lead So G. OF Lead and Mercury.
lI4zl II 464 cast bar.
ii io5 Drawn bar nae
Iii Gas, bat. iiH5
ll.3s7> 1870 average.
ATTEMPTED TO ascertain the increased weight 70
see if there might be cavities The cast oars which,
filled with mercury. would increase the total >Pechc
Gravity. The following are the weights before anu
"'''' Gf, Of Lead Increased to
4G342 1910
II I s423 1890
III Il 2O57 63lj3
Increase.
OO3ss
II 0O7s7
IiI--0lIO2
Here was great Irregularity-nea equal quant-
ties Of lead had absorbed quantities OF mercury dher-
ing from each other by hundred per cent.
Upon examining the bars where IN contact with
the mercury they were couoded, lead was found
dissolved IN the mercury.
An analysis Of the saturated lead bar by Hague, IN
e6S2 pr c of lead and Of mercury.
1868
9995
Another by Homer gave 6.3s. Of leaI.
Leaving 3o2% oi lhcI, ny
no az az
II was Observed by Prot Henry, think, ihai tle
progress Of mercury III the lead was much more
rapid IN cast than III hammered lead.
pon noting the progress from day 10 day, mos
unexpected results haye presented themselves. In
vertical bar with the mercury at the bottom me pro-
gToss is at first rapid II dimlnlShes IN velocity. how
ever from daV to day, until after months, several
having reached hight OF between SIX and seven
inches, It Is not nethouSandlh aS rapid as al the
outset
hollow bar Of Lead OF inch calIore. was erected
in "A cup Of mercury.
The latter metal rose IN hours --------00 1852 nm
IN Is hours more -0.00s
90 IN 70 days more --O.02s
go IA : DAYS more COOS 80
IN II days mole 900
Total in 30 days-..-----.-..---- 1l6 90
The mercury rose III another IN 60 days, O,OO6
NINA little more than SIX inches. II continued 10
rise with progress peTcepuble only after several
DAYS down to July Il. when the observations ceased
TINS was drawn lead pipe.
In two cast bars 1t rose somewhat more rapidly
and to a total gScatCr lght-ihuS cOnhrmiug the re-
suit, already quoted from Prof Henry. In one OF
them the yClOcliies were as follows,
In "a hours -o'Uso
In - hours more ----OOlO
IN 10 udNS more -"'''-
Ill. To ascertain If tins moderate elevation was
Influenced IN any degree by erayi'auon-several eS-
IcumontS were made.
Mercury was presented at The top OF q bar som IN
length Its descent was astOnlshngiy rapid. In ten
hours At had penetrated eco nm.
The first quantity having all passed into the bar IL
..f thor
ton the flow was resumed In less than TWO days
The mercury dropped from the bottom. THIS occur
REQ IN the nicht and the time was not noted.
This observation l. OF especial Importance IN us
bearing upon the theory OF the forces which cause
the moyomCnt o. the mercury.
Gravtauon evidently facilitates the transmission
of the mercury when flowing from above down~aTd.
1t. Of course, opposes rs flow from below upward
Toascoran the further influence Of gravity "A bar
atout i've inches long. saturated with mercury, was
Wlthdfavu from the cup and suspended. Aler a
TINE a single drop OF mercury oozed nom the lower
end and fell. Whatever the force that held the mcr
curry an the BAR II was not strong enough 10 retain all
of II IN opposition 10 gravity. should state that
from several other saturated bars Of less length SIM
Harry suspended, no mercury escaped.
" The mercury that drops from the bar presents
film upon IT'S surface, which, IN a sack. OF very
considerable tenaclty, CncaScs the puTer metal.
pen anahXnC the drop, Hague found by yolahzlng
the mercury at a low heat under mass OF cyanide
of potassium. carbonate OF soda and sand 9s of lead,
leaving 9s,o2 OF mercury.
Repeated experiments satisfied me that these de-
tomnatlOnS gave The lead too low. The lead itself
vaporzcS Al "A much lower temperature even by Il
seli than Is generally supposed and IN tue form of
amalgam with mercury al temperature still lower.
give the result Is proving merely the presence OF
lead IN the mercury that passed through the bar Of
lead
' The presence OF lead IN The mercury, which
was observed IN Tie repetition of the sypnon eNpeu-
ment. suggested TIE IN Oiry As 10 whether u came
from the end ot the bar >yphon from the lntc
nor as well as the end In the latter case the lu-
| toratonlc spaces would be Increased and the mcr
Cur under the influence of capillary attraction aud
graYitatou might be expected TO TOW faster. To
certain II tins might be. SNphon bar was arranged
of diameter, 600 mm total length not determined,
but about one dcCimCiT,, OF four inches. The aia9.
gam dropped into a weighed porcy.a cup, and Was
determined al intervals of ten DAYS, from Apnl ia
to July l7lh, and July q, empiylng the cup
after each weighing The Quaniliesthdt flowed
through IN the periods OF ten days
Is, -.-.....--..... 54l69 INSTRUMENTATION
.1--.---.-.-...... 579u6' 1ih....--..-.. - 66Q9
.o-.----........-. s.62>l sih---.....-... - 1854
-lli9,t 9th-.---.-...--- "a 603j
$3.50 10Th 4O035'
-Four CaVS 1920
OF zen GAYS 10 ----------- iS.teVo
There c0uid be little doubt that the channels
ihToue the lead were increased diameter. IS the
quantity OF lead that hoa cd through III "a given time
TOD h.