Macon beacon. [volume] (Macon, Miss.) 1859-1995, 1872-06-29
SCIENTIFIC NOTES.

Tur FLow or LrQUms.-Prof Cold
ing gives, in the "CopcnhaSen
Transactions" his Investigations Of
the law Of the motion Of water IN
pipes and couduits, and has also ap-
plied his result to ocean currents.
His method il TO determine the no
non of liquid threads, that motion
varying with the depth whon water
flows over n plane surface. Inc
formulae now generally used are
founded on the assumption that wa
ter moves in plane layers ut uniform
velocity. These formulao are known
TO be defective.
MAMA. Boussingault has given to
the Paris Academy OF Lclence an ac-
count OF his observations on man
na obtained from the leaves taken
from near the top Of an Old hnden,
in the Vosges. Other trees OF the
same kind in the vicinity yielded no
mama. The composition OF TINS
mama was found to be about Do per
cent of cane sugar, 25 of glucose,
and 20 OF dcxtren. The mamma from
Mt. Sinai, examined by Gutenberg
and Berthelot has nearly the same
composition, and was supposed to
bo an exudation caused by the pune
'Oro Vi "n iii'oo" M, .;,,o;,,Io
GUNPowDhh GAUdh'I-hno pl"+oipt r;aita
suggested by 1GeSca eApoll"iolI,1 pL Lda,'
on the now OF soma ,' Dooiea' n9a Sa,t p'Gn Ja
applied by NJ 10 Nolh I:','0sE' ,:,' a. n,o M
Reflye to the oeCernlIif"}ion In'! - ,o,,s ,,io
pressure III the pofe Vi IA | uLa
cylindrical lolG' pGI09 ~, my ,,, on0
gun, is nIled py a Dloch u ~ lJ"o1 5il out
ported behind Dy d S'Sei ,3n;oni g,Goni
through Wuicn Is " S'ii'4 ~ ~ '-l-,'' I,s ,I 49,
hole' NAen Pte'ou'o. :. u.s. sao.I " ;ntY
Lgau' q Pol'tIn tIl o1ool o- u hiaol, The vol
we iiotG LA - 'ft" tn,nd D IN the cylindrical
lnlo VI i91' f. ,lo ip,',a do,n hos noeo fred is
taNl'S ",.ga ,,,. ',,f &c t5a ',' nrassnre in the
Iae @ ll1"thao s th,, ,,,,n y, ''''
pore oi 'ne t'n' , cl..,o,
MINERAL =, GorroN;-I-hi' q, -; L:Litnd Go'oi,,l
Sellers OF fhila1elPHl5' .,'o 'ErS 11rnn!,i;n
at a recent meeVih9 Vi IH0 "a5nnt i"na na,it
Institute sample ol y = ataoo, Plou''uS ~
formed by ALLOWING " Jee u @ 1S'Gl G;nriJ
escape through " Sylo";n WI Io,na ~ n4r i"ta
Stag, by wllch the Stag 70 NV tI,,l ll'sD y,
the hnest threads, solng T, liiio' ~ 49, v"o u
three leeV III ien9Vh' iu'?e w. l,''ob I'','
OF glass reaoliy pleiN ,I ~ @ INV ,r,iita - fH
shorter ones WHICH, ii' % pviuS %n2 Inno2
somewhat TgSenlOl9 I co''?l lonoLoU einn,
the name Inc l'a'oi1"l 20 . .,,a, plo"
conductor Oh neat anu % PIT sio%' ''; ;ts
tlles OF ar must % IeT"iii5u Jtll - W t9
ms erstlces' 1t Is wen aIsp1'" is19 49,, ~
many purposes where sY-O"!lo" '.:"L MN
conductors oil neat are ie4tAo'' .,
BEssEMFR's GuN,-ln the improved
plan for heavy ordinance by MI
Bessemor, the initial pressure Is re-
duced by having series ot "in,'tiol n' .I'a
charges lgnlted S4cceS9l,el1 90 .Lo W."
shot travels a, "l9no @ Vno pIt0 49, ossartiai ~
gun inns u.s. hoMever, 'ro ,.,,r' 'I,oSl notent
teatur. ol .he : American T euL p%SU or5or
ed by MI a. o. Ly I"h' hla.. l :, f.on, wa
to secure the greatest OeIel'o p Nm NJ.
tins method OF aPPls ~ oroaso ,o,0o l thc
beSsGmef proposes = 70 Gt,. Mas toop IT, G !.
length OF the Gun % 10 my lee'' 4,,h.s ~ &c
to be made oi "rousnC-lion ..1"99' 20,
connected ny ila"6eS aLa tt;, S'lon =; tn0h ho
eu ny s'ec' 1no'' 80 ot -