New-York tribune., 1868-07-24
SCIENCE.
E;o1d of Newcastle

TEA FLoAT.-AIessqs. Field OF Newcastle,
upontheTyno have devised and patented mS,F0d no d oi
making tea, which they cnin clam fn9'6 @ has fendency TO
dsslpaiethe active prnclp!c-theine-Dut eAposng te
syt,,t ,L rapdiy without making the beverage
unpalatable. As the hottest portion OF ue WAFER y ~.
dIiSl me seiye which IS made TO Goat by means Of
air chamber attached 70 n is 50 taaI lnf yea i IL
DYYAMITE.-Ihs name, derived from Greek
word meaning power" Is given to new eAplo.lyo
compound introduced by Mr. Nobel, the engineer VINO
fHe. The composition of the new substance was EepI
secret for some tme 10 is, however, now known 10 M c
ert body. deposit Of iufu50ria earth near eL & d1
cisco, composed Of silica and sod as po'f, ,lrite
Is the body mixed with nro-gyccfnc u i. IN Snr.iye
for California miners which meets Win an oA'oH'i'0
sale.
CAPMIYE.-M. VOhl prepares this
ave inv 0t doyiug ~ parts OF naphaluc IN lOJ parts
OF sulphuIc acd aud adding by degrees 90 per cent 0f
bcbr6mao of potash After the reaction has terminated,
Soiijog water H. added aud caGbouic acid Is disouGdEcd
Carbonate OF soda is employed 70 neutrduze the sOUo
which, after hoigg boiled for quarter OF an hour h
has now beautiful golden color but ON adding hydro
taiued, which is napthyloamnc Tins product Is an
scd, giving, with alkalieS, yellow solution which dyes
EiiAs and wool, with mOIdantS, either orange on Violet
GERANosINE.-This new dye is made by dis
solving El0gramme OF any salt Of roscandne n iJ
ltres Of boiling water; when this solution has cooJt 70
grMnncs Of binOXyd of bdIum with 30 hlfes oL colu
water and 10 Ogranmes OF sulphurc acid. Ine NIX NIX
nearly cOlurlCss After being filtered 10 separate he
suphao Of bdryta, the solution is gradually heatt0 I'D
the boiling pOut when il assumes q red Color, NlicH
Foachts its greatest intensity attCf boinE Iof Two i
utes. and en ready for use. The shade OF color Io
duced by tls dye known as p9nccdu ana is eqI III
brhducy to that made by cOchiucaL 1He alpcdd0l VI
acid Strengthens the color, and ammonia dscA| seS IT,
COFFEE USED IN PHOTOGRAPHY.-Mr Ottawa
Barat editor La Camera OScUTG Tyre PiverOne, Italy,
has Invented Coffee Dry Process, by which plates pre-
pared twenty-five months back gave excellent negatives
after ten seconds Of exposure. He uses rs pitstI
liquid, water $50 grans ground cOhee 80 grams Ieiou
sugar, Is grams. Ills developer consists OF
Double sulphate OF ammonia ana IRON. t.3O grams
Crystaized sUglf.--...----.-...-------. 80 e,ns
SuIphate OF cOppcr-...--.-.------ .'O'
After The plates have been treated with the preserving
solution they arc dried by means OF TN DoN htu WIN
very hot sand or by water kept at the boiling point ny
means spirit lamp. The dried plates are thei placed
In a box with chloride of calcium on the bottom; mus
The cOOdonzed surface takes the appearance ol very
brilliant VaruiSh.
LIoUEFYING LAUGHING GAs.-The uniform
efficiency aud safety OF laughing gas an Rnestheuc has
bottle be made strong enough 10 hold the gas in liquid
fOru. and of such weight and dimensions that II may De
easily carried by tie in his daily rounds AT
present IL used by dentists from large gaSbdgs INTO
Which 10 is placed soon as made Laughing SiS Is com
posed according TO the rotation, OF Two atoms OF
nitrogen and Of oxygen These two elements are ie
principal constituents of common air. Laughing gas OF
nitrous OXyde can be Lquihcd under pressure or tbU
pounds per square inch when at the temperature OF 4
fahF The convenient and safe receptacle for the
foot in length and OF such thickness as 10 resist pres
Of at least 1900 pounds or several small uoes or tc
ordinary thickness might DC united side by side ana made
entirely safe.