The evening telegraph. [volume] (Philadelphia [Pa.]) 1864-1918, 1868-07-28
INTERESTING ITEMS.

ing tea has q tendency to dissipate the active
prinoiple-theine-bu exposing the leaves to
the highest temperature below the boiling
point extracts the theme rapidly without
making the beverage unpalatable. As the
hottest portion of the water is always at the
top of the vessel the tea is placed in a cylin-
drical metallic sieve which is made to float by
means of an air chamber attached to it, SO that
the tea is always in the position to be inau-
enctd by the greatest heat.
DYNAMlTE.-This name, derived from Greek
word meaning ''power," is given to new ex-
plosive compound introduced by Mr.. Nobel,
the engineer who first brought nitro-glycerine
into practical use for blasting. The compost
tion of the new substance was kept secret for
some time; it is, however, now known to be
simply nitro glycerine mixed mechanically
with some inert body. deposit of infusorial
earth near San Francisco, composed of silica,
and sold as polishing powder, is the body,
mixed with nitro-g lycerine to make Dynamite
for California miners, which meets with an
extensive sale.
GERAEosINE.-This new dye is made by dis
solving one kilogramme of any salt of rosesna
line in 1000 litres of boiling water; when this
solution has cooled to 113 degs. F., it is mixed
with another consisting of d kilogrammes Of
bnoxyd of barium with 35 litres of cold water
and 10 kilogrammes of sulphurio acid. The
mixture instantly becomes lemon color, but
IN a short time ia nearly colorIass After hainu
filtered, to separate the sulphate of baryta, the
solution is gradually heated to the boiling point,
when it assumes red color, which reaches
its greatest intensity after boiling for two
minutes, and is then ready for use. The
shade of color produced by this dye is known
as poncedu, and is equal in brillancy to that
made by cochineal. The application of acid
strengthens the color, and ammonia discharges
it.
Coppvp Trspn -, p,,orocn ,puv NJ Ot.or;o
pSSa,; as;ta- - = G(iN,.. : Ii'...-- 80 %;
' Hui.Oi VI IL oun.s" CSC", 6 6vIe
Verone, l'aiy, mas invented OoIee Dry tro-
cess, py "hlcn plates prepared twenty-two
nohIns oack gave eXcelenG negatives aiter
ten SECONDS OF exposure: lie uses as pre-
serving hquld, wafer, ooo grams; ground COT
zee, 9o grahs' renueu sugar, ID granis' his
developer CONSISTS OF o
Dlslilleo wafer oUo grams
Douple sulpnate ol ammonla ana
non I90 grams
SIyoSa.Neu SyS.r oueai 20 20 sI"s'
S;.I?n uipn@'G 80 "a 00PPe1' ~ el"ns'
0i',t1 @OtS ~ ,,lotos tro hoo, +rootOd .
pI''t;o,, .lo 5.;oS Go, WI os
r., bo, fIioS iti, ot 1I ~
- w 20 ~" Iii, -. - VI ~ 80:
- NJ 49, H., 30 .I"r, !" =, "
;., obTar;S f ooIo - "
~ tba ooiio5oizod S,,rfaaa toi-o, tI9 o,,,onr
Sno ", I-iI;o,'. tI'i>00 VIC "Ppo"i
"AU' 01 wy
LOBBYING LAUGHING GAs'-Ihe uniform
efhclency and saiety OF laughing gas as an
anesthetc mas prompted the 6rt'h Hedtcdl
journal TO Suggest that bottle be made strong
enough to hold the gas IN liquid form, and
OF such weight ana dimensions that IL may be
| easily carried py tne surgeon IN MS daily
ROUNDS. Az present IL Is USED oy dentists from
large gas-pags lhto Whlcn IL Is placed as soon
as made Laughing gas Is composed, accord
ing TO the new notatlon' OF Two atoms OF nitro
gen a. anu one VI oAyeen. Inese TWO elenents
a,hi1 t Ios or nitrons on;da no a
1I,,Ssr q 5rsSsnra If 75O nonnSs nor snnora
- - 81 +bo temnsrstnro of I5 darraaS
Tabranboi+ III Tho most cnnvenient and sofa
rana,otaoIa for the Tonid would ba a bross ~
| ao,,,iar t,,bo not noora +bo,, a loot IN 1a,,Otb
~ 80 .h;oI,,,ass 90 20 rosist ,,ro1I -
t ~ u IasSt ROO nouTJs Or SoHarai Ias
" %ba T "r5inory tbic[nsss roigbt be mid sSs
I,, Side o-,d rnaSe ent;rsIv safe '-'''
~ S'''0 o ~
d De Poor IN MnsoIn, of NaturoI Hstor' ~
~. tbr,S 5asnr;bas thn b"hi.s 60 .h;s ,;s
em ia s.T6o sno"I,IaG oLionoSa " ;slia ~
ia o0a,ai,i;n, oI,r Ior,r,S,o b,'t = Siat;,'
,,iabaS ~, its 6oan noIor rsI;ouaJ b1 oIaa,
sI4n i,s Ill, Inb;oL ;S oSou,,od Tr;tL
For tbo Iooot;o,, of thair ,,ost 49,
oo,'1ola oboosa N onan snot avnossd 70 tba am
60 oo~a =; o.. pp,oIeo 81 of 80:
Tiioa - tta1, Soar,a - a., ioiartI, tIin1N
RDo.S, -; :. ,;ttIo a,ro,,r,a nf I,tyoaI,n
nv M! 49, P"1s - g. .t; ,rooao ~ - go
S-~ iiodom "a aIdpotato of -,
.L o o &C. ,rb;oL tbau tbr,,St ,oi;di1, -,
10 - IA 49, tIa ;ta.,;aas ~ a. ~ ~
1;aI'o.S ;,a ", ..T
i;tt1a IL O,,oh 1920. tIa avs,